{
    "RECORDS": [
        {
            "answer_id": "32257",
            "course_id": "47",
            "title": "电压的单位是伏特，用符号______表示。",
            "type": "2",
            "answer1": "R",
            "answer2": "A",
            "answer3": "W",
            "answer4": "V",
            "answer5": "",
            "content": "",
            "result": "4"
        },
        {
            "answer_id": "32513",
            "course_id": "47",
            "title": "对于______A以下的焊条电弧焊用电弧焊电源，其负载持续率为60%。",
            "type": "2",
            "answer1": "1500",
            "answer2": "1000",
            "answer3": "800",
            "answer4": "500",
            "answer5": "",
            "content": "",
            "result": "4"
        },
        {
            "answer_id": "32769",
            "course_id": "47",
            "title": "下列焊丝中属于低合金钢焊丝的是______。",
            "type": "2",
            "answer1": "H08Mn",
            "answer2": "H13CrMoA",
            "answer3": "H1Cr24Ni13",
            "answer4": "H1Cr17",
            "answer5": "",
            "content": "",
            "result": "2"
        },
        {
            "answer_id": "33025",
            "course_id": "47",
            "title": "激光的特点为______、方向性好、单色性好。",
            "type": "2",
            "answer1": "亮度高",
            "answer2": "焦点唯一",
            "answer3": "光谱宽度宽",
            "answer4": "热源集中",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "33281",
            "course_id": "47",
            "title": "激光切割的特点是切割质量好、______、激光切割是无接触切割、可切割多种材",
            "type": "2",
            "answer1": "切割效率高",
            "answer2": "焦点唯一",
            "answer3": "光谱宽度宽",
            "answer4": "热源集中",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "32259",
            "course_id": "47",
            "title": "在质量方面的指挥和控制活动，通常包括制定质量方针和质量目标以及______、质量控制、质量保证和质量改进。",
            "type": "2",
            "answer1": "质量评价",
            "answer2": "质量策划",
            "answer3": "质量检验",
            "answer4": "质量实现",
            "answer5": "",
            "content": "",
            "result": "2"
        },
        {
            "answer_id": "32515",
            "course_id": "47",
            "title": "表示部件内部零件间装配关系的尺寸称为______。",
            "type": "2",
            "answer1": "装配尺寸",
            "answer2": "安装尺寸",
            "answer3": "规格尺寸",
            "answer4": "外形尺寸",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "32771",
            "course_id": "47",
            "title": "定位焊时容易产生______缺陷，故焊接电流应比正式焊接时高10%～15%。",
            "type": "2",
            "answer1": "未焊透",
            "answer2": "气孔",
            "answer3": "夹渣",
            "answer4": "咬边",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "33027",
            "course_id": "47",
            "title": "空气等离子切割5mm的不锈钢板的切割电流为______。",
            "type": "2",
            "answer1": "50A",
            "answer2": "30A",
            "answer3": "80A",
            "answer4": "100A",
            "answer5": "",
            "content": "",
            "result": "2"
        },
        {
            "answer_id": "33283",
            "course_id": "47",
            "title": "交流正弦波弧焊变压器由变压器、调节装置和______等组成。",
            "type": "2",
            "answer1": "分析装置",
            "answer2": "控制装置",
            "answer3": "指示装置",
            "answer4": "输出系统",
            "answer5": "",
            "content": "",
            "result": "3"
        },
        {
            "answer_id": "32261",
            "course_id": "47",
            "title": "下列______不是碳素钢按金相组织的分类。",
            "type": "2",
            "answer1": "奥氏体钢",
            "answer2": "铁素体钢",
            "answer3": "沸腾钢",
            "answer4": "马氏体钢",
            "answer5": "",
            "content": "",
            "result": "3"
        },
        {
            "answer_id": "32517",
            "course_id": "47",
            "title": "利用某些熔点低于母材熔点的金属材料作钎料，将焊件和钎料加热到高于钎料熔点，但低于母材熔点的温度，利用液态钎料润湿母材，填充接头间隙并与母材______实现连接焊件的方法，叫做钎焊。",
            "type": "2",
            "answer1": "相互连接",
            "answer2": "相互扩散",
            "answer3": "熔化",
            "answer4": "接触",
            "answer5": "",
            "content": "",
            "result": "2"
        },
        {
            "answer_id": "32773",
            "course_id": "47",
            "title": "在坡口中留钝边是为了防止烧穿，钝边的尺寸要保证第一层焊缝______。",
            "type": "2",
            "answer1": "不焊透",
            "answer2": "能焊透",
            "answer3": "不被烧穿",
            "answer4": "能烧穿",
            "answer5": "",
            "content": "",
            "result": "2"
        },
        {
            "answer_id": "33029",
            "course_id": "47",
            "title": "流行的质量管理方法有全面质量管理、______和QC七大手法。",
            "type": "2",
            "answer1": "总体质量管理",
            "answer2": "渐进质量管理",
            "answer3": "分段质量管理",
            "answer4": "六西格玛",
            "answer5": "",
            "content": "",
            "result": "4"
        },
        {
            "answer_id": "33285",
            "course_id": "47",
            "title": "在直流电弧焊时，由于在电弧两侧______不同，电弧受到磁场力的作用而偏向一边，这种现象叫做磁偏吹。",
            "type": "2",
            "answer1": "电弧吹力",
            "answer2": "气体流速",
            "answer3": "气体压力",
            "answer4": "磁场强度",
            "answer5": "",
            "content": "",
            "result": "4"
        },
        {
            "answer_id": "32263",
            "course_id": "47",
            "title": "焊缝基本符号“V”是表示______焊缝。",
            "type": "2",
            "answer1": "X型",
            "answer2": "Y型",
            "answer3": "V型",
            "answer4": "⊿型",
            "answer5": "",
            "content": "",
            "result": "3"
        },
        {
            "answer_id": "32519",
            "course_id": "47",
            "title": "气割法兰时，内圆和外圆不同的是______。",
            "type": "2",
            "answer1": "起割",
            "answer2": "切割",
            "answer3": "预热",
            "answer4": "切割温度",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "32775",
            "course_id": "47",
            "title": "有关道德与法律下面说法不正确的是______。",
            "type": "2",
            "answer1": "道德与法律产生的社会条件不同",
            "answer2": "道德与法律的表现形式不同",
            "answer3": "道德与法律的推行力量不同",
            "answer4": "道德与法律的制裁方式相同",
            "answer5": "",
            "content": "",
            "result": "4"
        },
        {
            "answer_id": "33031",
            "course_id": "47",
            "title": "法兰的基本形状为______。",
            "type": "2",
            "answer1": "同轴回转体",
            "answer2": "同心回转体",
            "answer3": "盘状结构",
            "answer4": "不确定",
            "answer5": "",
            "content": "",
            "result": "2"
        },
        {
            "answer_id": "33287",
            "course_id": "47",
            "title": "等离子弧是通过______、热收缩和磁收缩三种压缩作用获得的。",
            "type": "2",
            "answer1": "机械压缩",
            "answer2": "高温压缩",
            "answer3": "高速压缩",
            "answer4": "高能压缩",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "32265",
            "course_id": "47",
            "title": "氧化铝的分子式是______。",
            "type": "2",
            "answer1": "CaO",
            "answer2": "AlO",
            "answer3": "Al2O3",
            "answer4": "Al3O4",
            "answer5": "",
            "content": "",
            "result": "3"
        },
        {
            "answer_id": "32521",
            "course_id": "47",
            "title": "激光切割的特点是切割质量好、______、激光切割是无接触切割、可切割多种材料。",
            "type": "2",
            "answer1": "切割效率高",
            "answer2": "焦点唯一",
            "answer3": "光谱宽度宽",
            "answer4": "热源集中",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "32777",
            "course_id": "47",
            "title": "下列说法不正确的是______。",
            "type": "2",
            "answer1": "搬动焊机时，应切断电源",
            "answer2": "当埋弧焊机发生电器部分故障时，焊工应立即切断电源，自己动手进行检查",
            "answer3": "停止焊接后，操作工离开岗位时，应切断电源开关",
            "answer4": "进行焊接作业时，焊工应穿绝缘工作鞋，以防触电",
            "answer5": "",
            "content": "",
            "result": "2"
        },
        {
            "answer_id": "33033",
            "course_id": "47",
            "title": "在锅炉压力容器压力管道焊工考试中代号SMAW代表______。",
            "type": "2",
            "answer1": "钨极气体保护焊",
            "answer2": "熔化极气体保护焊",
            "answer3": "焊条电弧焊",
            "answer4": "埋弧焊",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "33289",
            "course_id": "47",
            "title": "符号Cl-表示______。",
            "type": "2",
            "answer1": "一个氯原子",
            "answer2": "一个氯分子",
            "answer3": "带有一个单位负电荷的氯离子",
            "answer4": "氯元素",
            "answer5": "",
            "content": "",
            "result": "3"
        },
        {
            "answer_id": "32267",
            "course_id": "47",
            "title": "熔化焊接基本方法是按照______不同而确定的。",
            "type": "2",
            "answer1": "热源形式",
            "answer2": "操作方法",
            "answer3": "材料",
            "answer4": "焊接设备",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "32523",
            "course_id": "47",
            "title": "气割方钢按方钢的边长、气割圆钢按圆钢的______，选择割炬和割嘴，便可以顺利切割。",
            "type": "2",
            "answer1": "直径",
            "answer2": "周长",
            "answer3": "长度",
            "answer4": "粗糙度",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "32779",
            "course_id": "47",
            "title": "按电源连接方式，等离子弧有非转移型、转移型和______三种形式。",
            "type": "2",
            "answer1": "联合型",
            "answer2": "常用型",
            "answer3": "非常用型",
            "answer4": "非联合型",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "33035",
            "course_id": "47",
            "title": "硬度是测定金属材料______的能力。",
            "type": "2",
            "answer1": "内部变形",
            "answer2": "表面变形",
            "answer3": "整体变形",
            "answer4": "局部变形",
            "answer5": "",
            "content": "",
            "result": "2"
        },
        {
            "answer_id": "33291",
            "course_id": "47",
            "title": "空气等离子切割8mm的不锈钢板的切割电流为______。",
            "type": "2",
            "answer1": "50A",
            "answer2": "30A",
            "answer3": "80A",
            "answer4": "100A",
            "answer5": "",
            "content": "",
            "result": "2"
        },
        {
            "answer_id": "32269",
            "course_id": "47",
            "title": "直流弧焊发电机由一台______和一台弧焊发电机组成。",
            "type": "2",
            "answer1": "异步电动机",
            "answer2": "同步电动机",
            "answer3": "交流电动机",
            "answer4": "直流电动机",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "32525",
            "course_id": "47",
            "title": "钢材在拉伸时，材料在拉断前所承受的最大应力称为______。",
            "type": "2",
            "answer1": "屈服强度",
            "answer2": "弯曲强度",
            "answer3": "抗拉强度",
            "answer4": "冲击韧性",
            "answer5": "",
            "content": "",
            "result": "3"
        },
        {
            "answer_id": "32781",
            "course_id": "47",
            "title": "职业道德是______的基石。",
            "type": "2",
            "answer1": "企业精神",
            "answer2": "企业文化",
            "answer3": "企业发展",
            "answer4": "企业管理",
            "answer5": "",
            "content": "",
            "result": "2"
        },
        {
            "answer_id": "33037",
            "course_id": "47",
            "title": "中和反应的实质是酸中的氢离子跟碱中的______结合生成水的反应。",
            "type": "2",
            "answer1": "氢离子",
            "answer2": "氧离子",
            "answer3": "氢氧根离子",
            "answer4": "氮离子",
            "answer5": "",
            "content": "",
            "result": "3"
        },
        {
            "answer_id": "33293",
            "course_id": "47",
            "title": "电压是电场内______的电位差。",
            "type": "2",
            "answer1": "任意两点间",
            "answer2": "任意一点",
            "answer3": "指定三点间",
            "answer4": "任意三点间",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "32271",
            "course_id": "47",
            "title": "碱性焊条的烘干温度要求较高，一般为______。",
            "type": "2",
            "answer1": "200～300℃",
            "answer2": "250～350℃",
            "answer3": "350～400℃",
            "answer4": "400～450℃",
            "answer5": "",
            "content": "",
            "result": "3"
        },
        {
            "answer_id": "32527",
            "course_id": "47",
            "title": "氧气瓶在使用时应套上______，以减小搬运时的撞击。",
            "type": "2",
            "answer1": "防震圈",
            "answer2": "防爆帽",
            "answer3": "防倒链",
            "answer4": "钢圈",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "32783",
            "course_id": "47",
            "title": "压焊的另一种形式是不加热，在被焊金属的接触面上施加足够大的压力，借助于压力所引起的塑性变形，以使原子间相互接近而获得牢固的______。",
            "type": "2",
            "answer1": "焊接接头",
            "answer2": "压挤接头",
            "answer3": "接头",
            "answer4": "焊缝",
            "answer5": "",
            "content": "",
            "result": "2"
        },
        {
            "answer_id": "33039",
            "course_id": "47",
            "title": "激光器现场操作和加工工作人员应穿白色工作服，减少______的影响。",
            "type": "2",
            "answer1": "投照光",
            "answer2": "漫反射",
            "answer3": "透射",
            "answer4": "辐射",
            "answer5": "",
            "content": "",
            "result": "2"
        },
        {
            "answer_id": "33295",
            "course_id": "47",
            "title": "空气等离子弧切割工艺参数包括工件厚度、喷嘴孔径、______、切割电压、切割电流、压缩空气流量、切割速度等。",
            "type": "2",
            "answer1": "空载电压",
            "answer2": "喷嘴长度",
            "answer3": "喷嘴大小",
            "answer4": "喷嘴数量",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "32273",
            "course_id": "47",
            "title": "下列哪项不是焊接工艺指导书应包括的内容______。",
            "type": "2",
            "answer1": "焊接工艺评定报告编号",
            "answer2": "焊接方法和自动化程度",
            "answer3": "单位名称",
            "answer4": "焊工姓名",
            "answer5": "",
            "content": "",
            "result": "4"
        },
        {
            "answer_id": "32529",
            "course_id": "47",
            "title": "激光焊设备主要包括激光器、光学偏转聚焦系统、光束检测器、______和控制系统。",
            "type": "2",
            "answer1": "工作台（或专用焊机）",
            "answer2": "显微镜",
            "answer3": "谐振腔",
            "answer4": "电容放电器",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "32785",
            "course_id": "47",
            "title": "激光割炬包括切割喷嘴、氧气进气管、氧气压力表、透镜冷却水套、______、反射镜冷却水套、反射镜、放大控制及驱动电路、位置传感器等。",
            "type": "2",
            "answer1": "激光器",
            "answer2": "聚焦系统",
            "answer3": "聚焦透镜",
            "answer4": "光束检测器",
            "answer5": "",
            "content": "",
            "result": "3"
        },
        {
            "answer_id": "33041",
            "course_id": "47",
            "title": "动圈式弧焊变压器电流的细调节是通过______。",
            "type": "2",
            "answer1": "通过改变一次线圈匝数来实现",
            "answer2": "通过改变二次线圈匝数来实现",
            "answer3": "通过改变一次线圈、二次线圈匝数来实现",
            "answer4": "过改变一次线圈、二次线圈的距离来实现",
            "answer5": "",
            "content": "",
            "result": "4"
        },
        {
            "answer_id": "33297",
            "course_id": "47",
            "title": "职业道德是______在职业行为和职业关系中的具体体现。",
            "type": "2",
            "answer1": "社会物质文明",
            "answer2": "社会道德要求",
            "answer3": "社会人际关系",
            "answer4": "社会生产行为",
            "answer5": "",
            "content": "",
            "result": "4"
        },
        {
            "answer_id": "32275",
            "course_id": "47",
            "title": "管道定位焊时，对于小口径定位焊一般______。",
            "type": "2",
            "answer1": "1～2处",
            "answer2": "3～4处",
            "answer3": "3～5处",
            "answer4": "3～4处",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "32531",
            "course_id": "47",
            "title": "单一式空气等离子弧切割方法的电极受到强烈的氧化腐蚀，所以一般采用镶嵌式______或纯铪电极。",
            "type": "2",
            "answer1": "纯钨",
            "answer2": "氧化物钨",
            "answer3": "石墨",
            "answer4": "纯锆",
            "answer5": "",
            "content": "",
            "result": "4"
        },
        {
            "answer_id": "32787",
            "course_id": "47",
            "title": "气割时，切口断面形状差主要有几种现象：______、上缘棱角被熔化或熔塌、切口中部凹心大和厚板切口下部呈喇叭状。",
            "type": "2",
            "answer1": "切口过宽",
            "answer2": "曲线切口偏离切割线",
            "answer3": "切口熔化",
            "answer4": "切割面不良",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "33043",
            "course_id": "47",
            "title": "焊接结构装配方法很多，但______不是。",
            "type": "2",
            "answer1": "划线定位装配",
            "answer2": "定位器定位装配",
            "answer3": "点固装配",
            "answer4": "装配夹具定位装配",
            "answer5": "",
            "content": "",
            "result": "3"
        },
        {
            "answer_id": "33299",
            "course_id": "47",
            "title": "焊条电弧焊的焊缝中间接头时要求在弧坑前约______处开始引弧。",
            "type": "2",
            "answer1": "5mm",
            "answer2": "10mm",
            "answer3": "15mm",
            "answer4": "20mm",
            "answer5": "",
            "content": "",
            "result": "2"
        },
        {
            "answer_id": "32277",
            "course_id": "47",
            "title": "气割时，直线切口不直的原因有：______、钢板变形、割嘴风线不好、操作技术不良等。",
            "type": "2",
            "answer1": "钢板放置不平",
            "answer2": "钢板放置过于水平",
            "answer3": "氧气压力过大",
            "answer4": "切割面不良",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "32533",
            "course_id": "47",
            "title": "在装配图中，______是不需要标注的。",
            "type": "2",
            "answer1": "规格尺寸",
            "answer2": "安装尺寸",
            "answer3": "所有零件尺寸",
            "answer4": "其他重要尺寸",
            "answer5": "",
            "content": "",
            "result": "3"
        },
        {
            "answer_id": "32789",
            "course_id": "47",
            "title": "基本坡口形状简单，______，应用普遍，",
            "type": "2",
            "answer1": "加工容易",
            "answer2": "加工复杂",
            "answer3": "不易加工",
            "answer4": "可以加工",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "33045",
            "course_id": "47",
            "title": "焊接前，清理坡口表面上的油、______、水分及其它有害杂质，保证焊接质量。",
            "type": "2",
            "answer1": "铁锈、油污",
            "answer2": "焊剂",
            "answer3": "丙酮",
            "answer4": "汽油",
            "answer5": "",
            "content": "",
            "result": "2"
        },
        {
            "answer_id": "33301",
            "course_id": "47",
            "title": "低温钢大部分是一些含______元素的低碳低合金钢。",
            "type": "2",
            "answer1": "Cr",
            "answer2": "Co",
            "answer3": "Ni",
            "answer4": "Cu",
            "answer5": "",
            "content": "",
            "result": "4"
        },
        {
            "answer_id": "32279",
            "course_id": "47",
            "title": "轴类零件的基本形状为______。",
            "type": "2",
            "answer1": "同轴回转体",
            "answer2": "异轴回转体",
            "answer3": "同心回转体",
            "answer4": "等高回转体",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "32535",
            "course_id": "47",
            "title": "对于低氢型的碱性焊条，重复烘干的次数不宜超过______。",
            "type": "2",
            "answer1": "六次",
            "answer2": "四次",
            "answer3": "五次",
            "answer4": "三次",
            "answer5": "",
            "content": "",
            "result": "4"
        },
        {
            "answer_id": "32791",
            "course_id": "47",
            "title": "不锈钢药芯焊丝E308MoT0-3中的“308”表示______。",
            "type": "2",
            "answer1": "熔敷金属化学成分分类代号",
            "answer2": "药芯焊丝",
            "answer3": "焊接电源种类",
            "answer4": "用于全位置焊接",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "33047",
            "course_id": "47",
            "title": "定位焊的焊缝位置应在式件破口内______。",
            "type": "2",
            "answer1": "中间处",
            "answer2": "两端处",
            "answer3": "始焊端",
            "answer4": "终焊端",
            "answer5": "",
            "content": "",
            "result": "2"
        },
        {
            "answer_id": "33303",
            "course_id": "47",
            "title": "退火可以______，提高塑性，使材料便于加工，并可细化晶粒，均匀钢的组织和成分，消除残余应力等。",
            "type": "2",
            "answer1": "提高强度",
            "answer2": "增加耐磨性",
            "answer3": "降低硬度",
            "answer4": "降低强度",
            "answer5": "",
            "content": "",
            "result": "3"
        },
        {
            "answer_id": "32281",
            "course_id": "47",
            "title": "直流电流表若表的量程不够用时，则应配用______以扩大电流表的量程。",
            "type": "2",
            "answer1": "整流器",
            "answer2": "互感器",
            "answer3": "分流器",
            "answer4": "电抗器",
            "answer5": "",
            "content": "",
            "result": "3"
        },
        {
            "answer_id": "32537",
            "course_id": "47",
            "title": "激光焊设备中，光束检测器有两个作用，一是可随时检测激光器的输出功率，二是可以检测激光束横断面上的______，以确定激光器的输出模式。",
            "type": "2",
            "answer1": "能量分布",
            "answer2": "亮度分布",
            "answer3": "频谱分布",
            "answer4": "功率分布",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "32793",
            "course_id": "47",
            "title": "等离子切割主要应防电击、防电弧光辐射、______、防噪声、放高频等。",
            "type": "2",
            "answer1": "防灰尘与烟气",
            "answer2": "氧气",
            "answer3": "乙炔",
            "answer4": "丙烷",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "33049",
            "course_id": "47",
            "title": "办事公道是指在______中正确地处理好国家、企业、职工个人、他人（消费者）的利益关系。",
            "type": "2",
            "answer1": "工作",
            "answer2": "生活",
            "answer3": "利益关系",
            "answer4": "工作和生活",
            "answer5": "",
            "content": "",
            "result": "3"
        },
        {
            "answer_id": "33305",
            "course_id": "47",
            "title": "调整劳动关系以及与劳动关系密切联系的社会关系的法律规范是______。",
            "type": "2",
            "answer1": "劳动法",
            "answer2": "合同法",
            "answer3": "就业法",
            "answer4": "刑法",
            "answer5": "",
            "content": "",
            "result": "2"
        },
        {
            "answer_id": "32283",
            "course_id": "47",
            "title": "激光产生基本理论是______。",
            "type": "2",
            "answer1": "自发辐射",
            "answer2": "受激吸收",
            "answer3": "受激辐射",
            "answer4": "辐射跃迁",
            "answer5": "",
            "content": "",
            "result": "3"
        },
        {
            "answer_id": "32539",
            "course_id": "47",
            "title": "激光割炬包括切割喷嘴、氧气进气管、______、透镜冷却水套、聚焦透镜、反射镜冷却水套、反射镜、放大控制及驱动电路、位置传感器等。",
            "type": "2",
            "answer1": "激光器",
            "answer2": "聚焦系统",
            "answer3": "氧气压力表",
            "answer4": "光束检测器",
            "answer5": "",
            "content": "",
            "result": "3"
        },
        {
            "answer_id": "32795",
            "course_id": "47",
            "title": "乙炔瓶必须______放置。",
            "type": "2",
            "answer1": "直立",
            "answer2": "放倒",
            "answer3": "倾斜",
            "answer4": "倒置",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "33051",
            "course_id": "47",
            "title": "对接接头焊缝宽度与原坡口相比增宽不得超过______。",
            "type": "2",
            "answer1": "3mm",
            "answer2": "4mm",
            "answer3": "5mm",
            "answer4": "6mm",
            "answer5": "",
            "content": "",
            "result": "3"
        },
        {
            "answer_id": "33307",
            "course_id": "47",
            "title": "并联电路中的总电阻值______各并联电路的电阻值。",
            "type": "2",
            "answer1": "等于",
            "answer2": "大于",
            "answer3": "小于",
            "answer4": "不确定",
            "answer5": "",
            "content": "",
            "result": "3"
        },
        {
            "answer_id": "32285",
            "course_id": "47",
            "title": "职业道德内容很丰富，但是不包括______。",
            "type": "2",
            "answer1": "职业道德守则",
            "answer2": "职业道德行为规范",
            "answer3": "职业道德品质",
            "answer4": "职业道德特点",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "32541",
            "course_id": "47",
            "title": "氧-乙炔焰切割25～100mm厚度钢板时，应选用______割炬。",
            "type": "2",
            "answer1": "G01-30",
            "answer2": "G01-100",
            "answer3": "G01-300",
            "answer4": "G02-300°",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "32797",
            "course_id": "47",
            "title": "低合金钢药芯焊丝E601T1－B3中的“1”表示______。",
            "type": "2",
            "answer1": "焊丝化学成分分类代号",
            "answer2": "药芯焊丝",
            "answer3": "焊接电源种类",
            "answer4": "用于全位置焊接",
            "answer5": "",
            "content": "",
            "result": "4"
        },
        {
            "answer_id": "33053",
            "course_id": "47",
            "title": "常用的射吸式割炬型号有G01-30、G01-100、______。",
            "type": "2",
            "answer1": "G01-500",
            "answer2": "G01-300",
            "answer3": "G02-10",
            "answer4": "G03-30",
            "answer5": "",
            "content": "",
            "result": "2"
        },
        {
            "answer_id": "33309",
            "course_id": "47",
            "title": "烘干焊条时，禁止将焊条直接放进高温炉内，或从高温炉中突然取出冷却，以防止焊条因骤冷骤热而产生药皮______。",
            "type": "2",
            "answer1": "开裂脱落",
            "answer2": "偏心",
            "answer3": "吸潮",
            "answer4": "锈蚀",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "32287",
            "course_id": "47",
            "title": "各种焊接材料均应有出场单位的______及质量合格证，符合要求方可入库。",
            "type": "2",
            "answer1": "生产型号",
            "answer2": "生产批号",
            "answer3": "材质单",
            "answer4": "生产炉号",
            "answer5": "",
            "content": "",
            "result": "4"
        },
        {
            "answer_id": "32543",
            "course_id": "47",
            "title": "在利益关系中正确地处理好国家、企业、职工个人、他人（消费者）的利益关系称为______。",
            "type": "2",
            "answer1": "诚实守信",
            "answer2": "办事公道",
            "answer3": "奉献社会",
            "answer4": "服务群众",
            "answer5": "",
            "content": "",
            "result": "3"
        },
        {
            "answer_id": "32799",
            "course_id": "47",
            "title": "在酸性焊条和碱性焊条均能满足性能要求的前提下，应尽量选用工艺性能好的______焊条。",
            "type": "2",
            "answer1": "碱性",
            "answer2": "特殊",
            "answer3": "低氢型",
            "answer4": "酸性",
            "answer5": "",
            "content": "",
            "result": "4"
        },
        {
            "answer_id": "33055",
            "course_id": "47",
            "title": "下列______不属于珠光体耐热钢。",
            "type": "2",
            "answer1": "15CrMo",
            "answer2": "20CrMoV",
            "answer3": "09Mn2V",
            "answer4": "15Cr1MoV",
            "answer5": "",
            "content": "",
            "result": "3"
        },
        {
            "answer_id": "33311",
            "course_id": "47",
            "title": "氧-乙炔切割可割厚度可达______。",
            "type": "2",
            "answer1": "300mm",
            "answer2": "100mm",
            "answer3": "50mm",
            "answer4": "150mm",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "32289",
            "course_id": "47",
            "title": "下列裂纹种类中不属于热裂纹的是______。",
            "type": "2",
            "answer1": "结晶裂纹",
            "answer2": "液化裂纹",
            "answer3": "再热裂纹",
            "answer4": "多边化裂纹",
            "answer5": "",
            "content": "",
            "result": "3"
        },
        {
            "answer_id": "32545",
            "course_id": "47",
            "title": "下列属于按焊条的用途分类的焊条有______。",
            "type": "2",
            "answer1": "酸性焊条",
            "answer2": "碱性焊条",
            "answer3": "焊丝",
            "answer4": "不锈钢焊条",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "32801",
            "course_id": "47",
            "title": "等离子弧焊接时，钨极尖端包角为______。",
            "type": "2",
            "answer1": "15°-25°",
            "answer2": "20°-30°",
            "answer3": "30°-45°",
            "answer4": "40°-50°",
            "answer5": "",
            "content": "",
            "result": "3"
        },
        {
            "answer_id": "33057",
            "course_id": "47",
            "title": "定位焊时，不能在焊缝交叉处和方向急剧变化处进行定位焊，应离开上述位置______左右距离。",
            "type": "2",
            "answer1": "50mm",
            "answer2": "100mm",
            "answer3": "300mm",
            "answer4": "80mm",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "33313",
            "course_id": "47",
            "title": "等离子切割空载电压还与______、喷嘴至工件距离、气体流量有关。",
            "type": "2",
            "answer1": "切割速度",
            "answer2": "割枪结构",
            "answer3": "切割电流",
            "answer4": "喷嘴孔径",
            "answer5": "",
            "content": "",
            "result": "2"
        },
        {
            "answer_id": "32291",
            "course_id": "47",
            "title": "根据GB/T1591—94规定，低合金高强度结构钢牌号由代表屈服点的字母“Q”，屈服点数值，______符号三部分按顺序排列。",
            "type": "2",
            "answer1": "抗拉强度",
            "answer2": "质量等级",
            "answer3": "伸长率",
            "answer4": "冲击韧度",
            "answer5": "",
            "content": "",
            "result": "2"
        },
        {
            "answer_id": "32547",
            "course_id": "47",
            "title": "处于高能级上的原子，受外来频率的光子的激励，从高能级跃迁到低能级，发出一个和外来光子完全相同的光子，称为______。",
            "type": "2",
            "answer1": "受激辐射",
            "answer2": "自发辐射",
            "answer3": "受激吸收",
            "answer4": "辐射跃迁",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "32803",
            "course_id": "47",
            "title": "激光切割时，当______一定时，切割氧气压力的最佳值随板厚的增加而减少。",
            "type": "2",
            "answer1": "表面粗糙度",
            "answer2": "喷嘴孔径",
            "answer3": "气体流量",
            "answer4": "功率",
            "answer5": "",
            "content": "",
            "result": "4"
        },
        {
            "answer_id": "33059",
            "course_id": "47",
            "title": "三视图的投影规律是______宽相等。",
            "type": "2",
            "answer1": "主视图与左视图",
            "answer2": "主视图与俯视图",
            "answer3": "主视图与右视图",
            "answer4": "俯视图与左视图",
            "answer5": "",
            "content": "",
            "result": "4"
        },
        {
            "answer_id": "33315",
            "course_id": "47",
            "title": "焊接电缆截面积的选择是根据______来选择的。",
            "type": "2",
            "answer1": "电缆长度",
            "answer2": "最大的焊接电流和电缆长度",
            "answer3": "最大的焊接电流和焊接电压",
            "answer4": "负载持续率和电缆长度",
            "answer5": "",
            "content": "",
            "result": "2"
        },
        {
            "answer_id": "32293",
            "course_id": "47",
            "title": "当焊件接电源正极，焊条接电源负极时叫______。",
            "type": "2",
            "answer1": "直流反接法",
            "answer2": "直流正接法",
            "answer3": "交流反接法",
            "answer4": "交流反接法",
            "answer5": "",
            "content": "",
            "result": "2"
        },
        {
            "answer_id": "32549",
            "course_id": "47",
            "title": "气割时，直线切口不直的原因有：钢板放置不平、钢板变形、______、操作技术不良等。",
            "type": "2",
            "answer1": "割嘴风线不好",
            "answer2": "切割速度过慢",
            "answer3": "氧气压力过大",
            "answer4": "切割面不良",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "32805",
            "course_id": "47",
            "title": "在一段无源电路中，电流的大小与电压成正比，而与______，这就是部分电路欧姆定律。",
            "type": "2",
            "answer1": "电阻率成正比",
            "answer2": "电阻率成反比",
            "answer3": "电阻值成正比",
            "answer4": "电阻值成反比",
            "answer5": "",
            "content": "",
            "result": "2"
        },
        {
            "answer_id": "33061",
            "course_id": "47",
            "title": "下列选项中______不是焊前预热的作用与目的。",
            "type": "2",
            "answer1": "降低焊后冷却速度，减小淬硬倾向",
            "answer2": "有利于扩散氢的逸出",
            "answer3": "防止夹渣",
            "answer4": "防止冷裂纹",
            "answer5": "",
            "content": "",
            "result": "3"
        },
        {
            "answer_id": "33317",
            "course_id": "47",
            "title": "以下有关对工作认真负责的说法不正确的是______。",
            "type": "2",
            "answer1": "焊接工作结束后，及时关闭焊机电源",
            "answer2": "焊接过程中注意层间清理",
            "answer3": "工作中不但要求数量多，而且要质量好",
            "answer4": "焊接中焊条头随意丢弃",
            "answer5": "",
            "content": "",
            "result": "4"
        },
        {
            "answer_id": "32295",
            "course_id": "47",
            "title": "基本坡口形式主要有以下几种：I形坡口、______、单边V形坡口、U形坡口、J形坡口。",
            "type": "2",
            "answer1": "X形坡口",
            "answer2": "V形坡口",
            "answer3": "Y形坡口",
            "answer4": "H形坡口",
            "answer5": "",
            "content": "",
            "result": "2"
        },
        {
            "answer_id": "32551",
            "course_id": "47",
            "title": "进行着色探伤时，我们从显现出来的图像情况可以判别出缺陷的______。",
            "type": "2",
            "answer1": "种类和位置",
            "answer2": "种类和大小",
            "answer3": "位置和大小",
            "answer4": "形状和大小",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "32807",
            "course_id": "47",
            "title": "对电源没有接地中线的低压电网中的用电器，将用电器的外壳用导体线作接地连接以保护人身安全，叫______。",
            "type": "2",
            "answer1": "防触电装置",
            "answer2": "防雷保护",
            "answer3": "防护装置",
            "answer4": "保护接地",
            "answer5": "",
            "content": "",
            "result": "3"
        },
        {
            "answer_id": "33063",
            "course_id": "47",
            "title": "碳钢焊条型号中第三位和第四位数字组合时表示焊接______和药皮类型。",
            "type": "2",
            "answer1": "额定电流",
            "answer2": "电流强度",
            "answer3": "电压种类",
            "answer4": "电流种类",
            "answer5": "",
            "content": "",
            "result": "3"
        },
        {
            "answer_id": "33319",
            "course_id": "47",
            "title": "在X射线探伤中，气孔在胶片上呈现______。",
            "type": "2",
            "answer1": "圆形或椭圆形黑点",
            "answer2": "不规则的白亮块状",
            "answer3": "点状或条状",
            "answer4": "规则的黑色线状",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "32297",
            "course_id": "47",
            "title": "等离子弧是通过机械压缩、______和磁收缩三种压缩作用获得的。",
            "type": "2",
            "answer1": "热收缩",
            "answer2": "高温压缩",
            "answer3": "高速压缩",
            "answer4": "高能压缩",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "32553",
            "course_id": "47",
            "title": "一般的等离子切割不用______，工作气体和切割气体从同一喷嘴内喷出。",
            "type": "2",
            "answer1": "保护气体",
            "answer2": "熔化气体",
            "answer3": "介质气体",
            "answer4": "引弧气体",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "32809",
            "course_id": "47",
            "title": "淬火的目的是为了提高钢的______和耐磨性。",
            "type": "2",
            "answer1": "硬度",
            "answer2": "强度",
            "answer3": "韧性",
            "answer4": "刚性",
            "answer5": "",
            "content": "",
            "result": "4"
        },
        {
            "answer_id": "33065",
            "course_id": "47",
            "title": "在右手螺旋法则中，以______竖起的方向表示电流的方向，其余四指弯曲，则四指弯曲的指向就是电流磁场的方向。",
            "type": "2",
            "answer1": "右手拇指",
            "answer2": "右手中指",
            "answer3": "右手是指",
            "answer4": "左手拇指",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "33321",
            "course_id": "47",
            "title": "下列不属于文明生产要求的是______。",
            "type": "2",
            "answer1": "能说会道",
            "answer2": "相互学习",
            "answer3": "纪律严明",
            "answer4": "技术熟练",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "32299",
            "course_id": "47",
            "title": "下列关于创新的论述不正确的是______。",
            "type": "2",
            "answer1": "创新对个人发展无关紧要",
            "answer2": "创新是企事业持续、健康发展的巨大动力",
            "answer3": "创新是企事业竞争取胜的重要手段",
            "answer4": "创新是个人事业获得成功的重要因素",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "32555",
            "course_id": "47",
            "title": "职业道德首先要从______的职业行为规范开始。",
            "type": "2",
            "answer1": "服务群众，奉献社会",
            "answer2": "爱岗敬业，忠于职守",
            "answer3": "诚实守信，办事公道",
            "answer4": "遵纪守法，廉洁奉公",
            "answer5": "",
            "content": "",
            "result": "2"
        },
        {
            "answer_id": "32811",
            "course_id": "47",
            "title": "焊接变形中的角变形、弯曲变形和______等，在外力作用下会引起应力集中和附加应力，使结构承载能力下降。",
            "type": "2",
            "answer1": "波浪变形",
            "answer2": "扭曲变形",
            "answer3": "收缩变形",
            "answer4": "错边变形",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "33067",
            "course_id": "47",
            "title": "在距焊接场所______内不得放置易燃易爆物品。",
            "type": "2",
            "answer1": "10m",
            "answer2": "12m",
            "answer3": "14m",
            "answer4": "16m",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "33323",
            "course_id": "47",
            "title": "关于勤劳节俭的说法，你认为正的是______。",
            "type": "2",
            "answer1": "阻碍消费，因而会阻碍市场经济的发展",
            "answer2": "市场经济需要勤劳，但不需要节俭",
            "answer3": "节俭是促进经济发展的动力",
            "answer4": "节俭有利于节省资源，但与提高生产力无关",
            "answer5": "",
            "content": "",
            "result": "3"
        },
        {
            "answer_id": "32301",
            "course_id": "47",
            "title": "由于钢材在剪切过程中受剪刀的挤压产生弯曲变形及剪切变形，在切口附近产生冷作硬化现象，硬化区宽度一般在______。",
            "type": "2",
            "answer1": "1.5～2.5mm",
            "answer2": "3～4mm",
            "answer3": "5～6mm",
            "answer4": "10～15mm",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "32557",
            "course_id": "47",
            "title": "电路的基本组成部分有：______、负载和连接导线。",
            "type": "2",
            "answer1": "电容",
            "answer2": "电阻",
            "answer3": "电源",
            "answer4": "电感",
            "answer5": "",
            "content": "",
            "result": "3"
        },
        {
            "answer_id": "32813",
            "course_id": "47",
            "title": "管板焊接宏观金相试验时，检查面上可以有未焊透，但未焊透的深度______。",
            "type": "2",
            "answer1": "≤5%",
            "answer2": "≤10%",
            "answer3": "≤15%",
            "answer4": "≤20%",
            "answer5": "",
            "content": "",
            "result": "2"
        },
        {
            "answer_id": "33069",
            "course_id": "47",
            "title": "激光器按照激光工作物质状态可分为：液体激光器和______。",
            "type": "2",
            "answer1": "气体激光器",
            "answer2": "固体激光器",
            "answer3": "等离子激光器",
            "answer4": "电容放电激光器",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "33325",
            "course_id": "47",
            "title": "开坡口能起到调节基本金属与填充金属的______。",
            "type": "2",
            "answer1": "成型",
            "answer2": "稀释作用",
            "answer3": "比例作用",
            "answer4": "合金成分",
            "answer5": "",
            "content": "",
            "result": "3"
        },
        {
            "answer_id": "32303",
            "course_id": "47",
            "title": "受激辐射和自发辐射有本质上的区别，前者是______产生，后者是______产生。",
            "type": "2",
            "answer1": "受激自发",
            "answer2": "自发受激",
            "answer3": "受激反转",
            "answer4": "自发反转",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "32559",
            "course_id": "47",
            "title": "正火可以______，并提高钢的综合力学性能，所以许多碳素钢和低合金钢常用来作为最终热处理。",
            "type": "2",
            "answer1": "提高强度",
            "answer2": "增加耐磨性",
            "answer3": "提高硬度",
            "answer4": "细化晶粒",
            "answer5": "",
            "content": "",
            "result": "4"
        },
        {
            "answer_id": "32815",
            "course_id": "47",
            "title": "法律与道德的______一致，追求的都是社会秩序安定，人际关系和谐，生产力发展，人们生活幸福。",
            "type": "2",
            "answer1": "内容",
            "answer2": "目标",
            "answer3": "结构",
            "answer4": "表现方式",
            "answer5": "",
            "content": "",
            "result": "2"
        },
        {
            "answer_id": "33071",
            "course_id": "47",
            "title": "下列元素中为非金属元素的是______。",
            "type": "2",
            "answer1": "镍",
            "answer2": "汞",
            "answer3": "硫",
            "answer4": "钨",
            "answer5": "",
            "content": "",
            "result": "3"
        },
        {
            "answer_id": "33327",
            "course_id": "47",
            "title": "空气等离子切割有______种型式。",
            "type": "2",
            "answer1": "两",
            "answer2": "三",
            "answer3": "四",
            "answer4": "五",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "32305",
            "course_id": "47",
            "title": "下列关于职业道德是人格的一面镜子的说法中，不正确的是______。",
            "type": "2",
            "answer1": "人的职业道德品质反映着人的整体道德素质",
            "answer2": "人的职业道德的提高有利于人的思想道德素质的全面提高",
            "answer3": "提高职业道德水平是人格升华最重要的途径",
            "answer4": "人的思想道德素质的提高与职业道德没有关系",
            "answer5": "",
            "content": "",
            "result": "4"
        },
        {
            "answer_id": "32561",
            "course_id": "47",
            "title": "在断续负载工作方式中，______对整个工作周期之比的百分率叫负载持续率。",
            "type": "2",
            "answer1": "负载持续时间",
            "answer2": "休息时间",
            "answer3": "间断时间",
            "answer4": "断续",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "32817",
            "course_id": "47",
            "title": "在焊工职业活动、行为有关的制度和纪律中，______是不属于这个范畴的。",
            "type": "2",
            "answer1": "安全操作规程",
            "answer2": "履行岗位职责",
            "answer3": "遵守道德规范",
            "answer4": "完成企业分派的任务",
            "answer5": "",
            "content": "",
            "result": "3"
        },
        {
            "answer_id": "33073",
            "course_id": "47",
            "title": "激光切割的特点是切割质量好、切割效率高、______、可切割多种材料。",
            "type": "2",
            "answer1": "激光切割是无接触切割",
            "answer2": "焦点唯一",
            "answer3": "光谱宽度宽",
            "answer4": "热源集中",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "33329",
            "course_id": "47",
            "title": "安培是______的单位。",
            "type": "2",
            "answer1": "电压",
            "answer2": "电流",
            "answer3": "电阻",
            "answer4": "电感",
            "answer5": "",
            "content": "",
            "result": "3"
        },
        {
            "answer_id": "32307",
            "course_id": "47",
            "title": "______是一种社会意识形态，是人们共同生活及其行为的准则与规范。",
            "type": "2",
            "answer1": "法律",
            "answer2": "准则",
            "answer3": "要求",
            "answer4": "道德",
            "answer5": "",
            "content": "",
            "result": "4"
        },
        {
            "answer_id": "32563",
            "course_id": "47",
            "title": "由两种不同的晶体结构彼此机械混合而组成的合金称为______。",
            "type": "2",
            "answer1": "固溶体",
            "answer2": "化合物",
            "answer3": "机械混合物",
            "answer4": "混合物",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "32819",
            "course_id": "47",
            "title": "在稳定的工作状态下，电弧焊电源输出端电压与输出端电流之间的关系称为______。",
            "type": "2",
            "answer1": "电弧焊电源的外特性",
            "answer2": "弧焊电源的动特性",
            "answer3": "弧焊电源的静特性",
            "answer4": "弧焊电源的调节性",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "33075",
            "course_id": "47",
            "title": "晶闸管弧焊整流器由电源系统、______、控制系统、反馈系统等几部分组成。",
            "type": "2",
            "answer1": "触发系统",
            "answer2": "升压系统",
            "answer3": "整流系统",
            "answer4": "降压系统",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "33331",
            "course_id": "47",
            "title": "等离子切割电源输出的空载电压一般大于______。",
            "type": "2",
            "answer1": "300V",
            "answer2": "150V",
            "answer3": "600V",
            "answer4": "1000V",
            "answer5": "",
            "content": "",
            "result": "2"
        },
        {
            "answer_id": "32309",
            "course_id": "47",
            "title": "空气等离子切割6mm的碳钢钢板的切割电流为______。",
            "type": "2",
            "answer1": "50A",
            "answer2": "30A",
            "answer3": "80A",
            "answer4": "100A",
            "answer5": "",
            "content": "",
            "result": "2"
        },
        {
            "answer_id": "32565",
            "course_id": "47",
            "title": "装配图中，对于______，当剖切面通过基本轴线或对称面时，这些零件按不剖处理。",
            "type": "2",
            "answer1": "连接件和实心件",
            "answer2": "空心件和连接件",
            "answer3": "实心件和紧固件",
            "answer4": "紧固件和连接件",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "32821",
            "course_id": "47",
            "title": "在焊接过程中，焊缝和热影响区金属冷却到固相线附近的高温区时产生的裂纹属于______。",
            "type": "2",
            "answer1": "冷裂纹",
            "answer2": "热裂纹",
            "answer3": "再热裂纹",
            "answer4": "延迟裂纹",
            "answer5": "",
            "content": "",
            "result": "3"
        },
        {
            "answer_id": "33077",
            "course_id": "47",
            "title": "熔焊保护措施的基本形式是______、气体保护和熔渣保护三种。",
            "type": "2",
            "answer1": "电弧保护",
            "answer2": "真空焊接",
            "answer3": "氩气保护",
            "answer4": "气渣保护",
            "answer5": "",
            "content": "",
            "result": "2"
        },
        {
            "answer_id": "33333",
            "course_id": "47",
            "title": "焊丝H08Mn2Si中“08”表示______。",
            "type": "2",
            "answer1": "表示含Mn量为0.08％",
            "answer2": "表示含Si量为0.8％",
            "answer3": "表示含Mn量为0.8％",
            "answer4": "表示含C量为0.08％",
            "answer5": "",
            "content": "",
            "result": "4"
        },
        {
            "answer_id": "32311",
            "course_id": "47",
            "title": "人们把所有元素按其______由小到大的顺序给其编号，这种序号叫做该元素的原子序数。",
            "type": "2",
            "answer1": "中子数",
            "answer2": "核电荷数",
            "answer3": "最外层电子数",
            "answer4": "相对原子质量",
            "answer5": "",
            "content": "",
            "result": "2"
        },
        {
            "answer_id": "32567",
            "course_id": "47",
            "title": "在中、厚板焊接时，对同一厚度的材料，其他条件不变时，焊接层数增加______。",
            "type": "2",
            "answer1": "提高了焊接接头的塑性和韧性",
            "answer2": "降低了焊接接头的塑性和韧性",
            "answer3": "焊缝的夹渣倾向增加",
            "answer4": "焊缝热裂纹倾向增加",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "32823",
            "course_id": "47",
            "title": "下列焊剂中属于不锈钢焊剂的是______。",
            "type": "2",
            "answer1": "F4A2-H08A",
            "answer2": "F5121-H08MnMoA",
            "answer3": "F308L-H00Cr21Ni10",
            "answer4": "HJ431",
            "answer5": "",
            "content": "",
            "result": "3"
        },
        {
            "answer_id": "33079",
            "course_id": "47",
            "title": "低合金耐蚀钢主要用于大气、海水和石油化工等______中工作的各种机械设备和结构。",
            "type": "2",
            "answer1": "潮湿介质",
            "answer2": "腐蚀介质",
            "answer3": "低温介质",
            "answer4": "压力介质",
            "answer5": "",
            "content": "",
            "result": "2"
        },
        {
            "answer_id": "33335",
            "course_id": "47",
            "title": "大直径圆钢与大尺寸方钢切割时，由于尺寸超过割炬的切割能力，整个割口不能一次完成，必须通过改变切割______，才能达到割透的目的。",
            "type": "2",
            "answer1": "方向",
            "answer2": "周长",
            "answer3": "长度",
            "answer4": "粗糙度",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "32313",
            "course_id": "47",
            "title": "材料的冲击韧度和其所处环境的温度有关，温度越低，其冲击韧度值______。",
            "type": "2",
            "answer1": "越大",
            "answer2": "越小",
            "answer3": "无变化",
            "answer4": "不确定",
            "answer5": "",
            "content": "",
            "result": "2"
        },
        {
            "answer_id": "32569",
            "course_id": "47",
            "title": "在进行划线之前，铸铁和锻件毛坯表面要涂______。",
            "type": "2",
            "answer1": "石灰水",
            "answer2": "硫酸铜溶液",
            "answer3": "蓝油",
            "answer4": "碳酸钠溶液",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "32825",
            "course_id": "47",
            "title": "在铁碳平衡状态图中，E点是区分钢和铸铁的分界点，其碳的质量分数为______。",
            "type": "2",
            "answer1": "0.008",
            "answer2": "0.0211",
            "answer3": "0.043",
            "answer4": "0.0667",
            "answer5": "",
            "content": "",
            "result": "2"
        },
        {
            "answer_id": "33081",
            "course_id": "47",
            "title": "在剔毛刺、侧面錾切及使用较短小的錾子时应采用______。",
            "type": "2",
            "answer1": "正握法",
            "answer2": "反握法",
            "answer3": "立握法",
            "answer4": "以上都可以",
            "answer5": "",
            "content": "",
            "result": "2"
        },
        {
            "answer_id": "33337",
            "course_id": "47",
            "title": "电流的单位是安培，用符号______表示。",
            "type": "2",
            "answer1": "R",
            "answer2": "V",
            "answer3": "F",
            "answer4": "A",
            "answer5": "",
            "content": "",
            "result": "4"
        },
        {
            "answer_id": "32315",
            "course_id": "47",
            "title": "在焊剂牌号SJ101中的“SJ”表示______。",
            "type": "2",
            "answer1": "熔炼焊剂",
            "answer2": "活性焊剂",
            "answer3": "合金焊剂",
            "answer4": "烧结焊剂",
            "answer5": "",
            "content": "",
            "result": "4"
        },
        {
            "answer_id": "32571",
            "course_id": "47",
            "title": "乙炔瓶无论是贮存还是正常使用，都应远离高温明火、熔融金属飞溅物和可燃易爆物质等，一般规定应当距离______以上。",
            "type": "2",
            "answer1": "10米",
            "answer2": "20米",
            "answer3": "30米",
            "answer4": "50米",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "32827",
            "course_id": "47",
            "title": "物质跟氧发生的化学反应称为______。",
            "type": "2",
            "answer1": "中和反应",
            "answer2": "分解反应",
            "answer3": "还原反应",
            "answer4": "氧化反应",
            "answer5": "",
            "content": "",
            "result": "4"
        },
        {
            "answer_id": "33083",
            "course_id": "47",
            "title": "等离子切割气体流量过大，从电弧中带走过多的热量，降低了切割能力，不利于______。",
            "type": "2",
            "answer1": "电弧稳定",
            "answer2": "电压升高",
            "answer3": "功率降低",
            "answer4": "频率降低",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "33339",
            "course_id": "47",
            "title": "单一式空气等离子弧切割特别适宜切割厚______以下的碳钢，也可以切割铜、不锈钢、铝及其他材料。",
            "type": "2",
            "answer1": "10mm",
            "answer2": "20mm",
            "answer3": "50mm",
            "answer4": "30mm",
            "answer5": "",
            "content": "",
            "result": "4"
        },
        {
            "answer_id": "32317",
            "course_id": "47",
            "title": "金属在外力作用时所表现出来的性能称为______。",
            "type": "2",
            "answer1": "化学性能",
            "answer2": "物理性能",
            "answer3": "力学性能",
            "answer4": "焊接性能",
            "answer5": "",
            "content": "",
            "result": "3"
        },
        {
            "answer_id": "32573",
            "course_id": "47",
            "title": "激光可切割蓝宝石，是利用激光在刻槽的同时，由于激光加热所产生的陡峭的温度分布，在脆性材料里产生______，使蓝宝石沿刻槽断开。",
            "type": "2",
            "answer1": "缺陷",
            "answer2": "裂纹",
            "answer3": "局部热应力",
            "answer4": "拉应力",
            "answer5": "",
            "content": "",
            "result": "3"
        },
        {
            "answer_id": "32829",
            "course_id": "47",
            "title": "在下列气焊、气割操作前不用经企业安全部门批准后方可作业的是：______。",
            "type": "2",
            "answer1": "焊接切割盛装过易燃及暴物料、强氧化剂或有毒的各种容器、管段、设备",
            "answer2": "在带电压或带压的容器、管道、罐、柜设备上进行焊接作业",
            "answer3": "对悬挂在起重机吊勾或其他位置的工件及设备",
            "answer4": "在容器、桶、罐、舱室中进行气焊切割作业",
            "answer5": "",
            "content": "",
            "result": "4"
        },
        {
            "answer_id": "33085",
            "course_id": "47",
            "title": "材料验收的主要内容包括材料的炉号、批号、型号、______和金属力学性能。",
            "type": "2",
            "answer1": "检验机构",
            "answer2": "抗拉强度",
            "answer3": "化学成分",
            "answer4": "生产厂家",
            "answer5": "",
            "content": "",
            "result": "3"
        },
        {
            "answer_id": "33341",
            "course_id": "47",
            "title": "CO2气瓶外表是铝白色，并标有______“液态二氧化碳”字样。",
            "type": "2",
            "answer1": "银灰色",
            "answer2": "黑色",
            "answer3": "天蓝色",
            "answer4": "深绿色",
            "answer5": "",
            "content": "",
            "result": "2"
        },
        {
            "answer_id": "32319",
            "course_id": "47",
            "title": "下列关于职业道德是事业成功的保证的说法中，正确的是______。",
            "type": "2",
            "answer1": "没有职业道德也可以做好事情",
            "answer2": "职业道德是人事业成功的重要条件",
            "answer3": "事业的成功与职业道德没有关系",
            "answer4": "职业活动对人的发展毫无关系",
            "answer5": "",
            "content": "",
            "result": "2"
        },
        {
            "answer_id": "32575",
            "course_id": "47",
            "title": "下列说法错误的是______。",
            "type": "2",
            "answer1": "着色探伤可以发现奥氏体不锈钢焊接接头的各种表面缺陷",
            "answer2": "着色探伤不受工件形状、大小的限制",
            "answer3": "着色探伤可以判别出缺陷的位置和大小",
            "answer4": "着色探伤可以检测出焊缝内部存在的缺陷",
            "answer5": "",
            "content": "",
            "result": "4"
        },
        {
            "answer_id": "32831",
            "course_id": "47",
            "title": "管径为180mm的管子焊接时其角变形偏差值α______。",
            "type": "2",
            "answer1": "≯1/100",
            "answer2": "≯2/100",
            "answer3": "≯3/200",
            "answer4": "≯4/200",
            "answer5": "",
            "content": "",
            "result": "3"
        },
        {
            "answer_id": "33087",
            "course_id": "47",
            "title": "有关道德与法律下面说法正确的是______。",
            "type": "2",
            "answer1": "道德与法律产生的社会条件是相同的",
            "answer2": "道德与法律的表现形式相同",
            "answer3": "道德与法律的推行力量不同",
            "answer4": "道德与法律的制裁方式相同",
            "answer5": "",
            "content": "",
            "result": "4"
        },
        {
            "answer_id": "33343",
            "course_id": "47",
            "title": "焊接工作区域的车辆通道宽度不小于3m，人行通道不小于______。",
            "type": "2",
            "answer1": "1m",
            "answer2": "1.5m",
            "answer3": "2m",
            "answer4": "2.5m",
            "answer5": "",
            "content": "",
            "result": "2"
        },
        {
            "answer_id": "32321",
            "course_id": "47",
            "title": "用氧-乙炔切割淬火倾向较大的钢材时，为了避免切口淬火或产生裂纹，应采取适当______。",
            "type": "2",
            "answer1": "加大预热火焰功率和放慢切割速度",
            "answer2": "减少预热火焰功率和放慢切割速度",
            "answer3": "加大预热火焰功率和加快切割速度",
            "answer4": "减少预热火焰功率和加快切割速度",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "32577",
            "course_id": "47",
            "title": "空气等离子弧切割工艺参数包括工件厚度、______、空载电压、切割电压、切割电流、压缩空气流量、切割速度等。",
            "type": "2",
            "answer1": "喷嘴孔径",
            "answer2": "喷嘴长度",
            "answer3": "喷嘴大小",
            "answer4": "喷嘴数量",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "32833",
            "course_id": "47",
            "title": "气割开坡口开V形坡口时，预热能力稍低，切割氧的压力适当______。",
            "type": "2",
            "answer1": "减小",
            "answer2": "增大",
            "answer3": "相同",
            "answer4": "稍有减小",
            "answer5": "",
            "content": "",
            "result": "2"
        },
        {
            "answer_id": "33089",
            "course_id": "47",
            "title": "等离子切割气体流量大，利于压缩电弧，使等离子弧的能量更为集中，提高了______",
            "type": "2",
            "answer1": "工作电压",
            "answer2": "工作电流",
            "answer3": "工作功率",
            "answer4": "工作频率",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "33345",
            "course_id": "47",
            "title": "焊接时用强迫冷却的方法将焊接区的热量散走，使焊缝附近的金属受热面大为减小，以减少焊接变形的方法称为______。",
            "type": "2",
            "answer1": "散热法",
            "answer2": "锤击法",
            "answer3": "温度法",
            "answer4": "冷却法",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "32323",
            "course_id": "47",
            "title": "激光加工设备上应设有明显的______和信号，如激光危险，高压危险等。",
            "type": "2",
            "answer1": "危险警告标志",
            "answer2": "记号",
            "answer3": "标识号",
            "answer4": "识别标志",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "32579",
            "course_id": "47",
            "title": "下列______不是使用双齿纹锉刀的优点。",
            "type": "2",
            "answer1": "锉削表面比较光洁",
            "answer2": "工作比较省力",
            "answer3": "锉纹不易被锉屑堵塞",
            "answer4": "可以锉铝、镁等软金属",
            "answer5": "",
            "content": "",
            "result": "4"
        },
        {
            "answer_id": "32835",
            "course_id": "47",
            "title": "办事公道要求在工作中，要以处理好______的利益关系，做到个人服从集体，保证个人利益和集体利益相统一。",
            "type": "2",
            "answer1": "国家和个人",
            "answer2": "国家和企业",
            "answer3": "企业和个人",
            "answer4": "国家、企业和个人",
            "answer5": "",
            "content": "",
            "result": "3"
        },
        {
            "answer_id": "33091",
            "course_id": "47",
            "title": "熔化极惰性气体保护焊的焊接方法代号是______。",
            "type": "2",
            "answer1": "111",
            "answer2": "141",
            "answer3": "131",
            "answer4": "135",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "33347",
            "course_id": "47",
            "title": "磁放大器式脉冲弧焊电源主要用于______。",
            "type": "2",
            "answer1": "非熔化极氩弧焊",
            "answer2": "焊条电弧焊",
            "answer3": "钨极氩弧焊",
            "answer4": "熔化极氩弧焊",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "32325",
            "course_id": "47",
            "title": "不锈钢焊条型号E308L-15中，数字后面的字母“L”表示______。",
            "type": "2",
            "answer1": "含碳量较高",
            "answer2": "含碳量较低",
            "answer3": "硫、磷含量较低",
            "answer4": "硫、磷含量较高",
            "answer5": "",
            "content": "",
            "result": "2"
        },
        {
            "answer_id": "32581",
            "course_id": "47",
            "title": "焊条若偏心，则表明焊条沿焊芯直径方向的药皮厚度有______。",
            "type": "2",
            "answer1": "问题",
            "answer2": "差异",
            "answer3": "锈蚀",
            "answer4": "脱落",
            "answer5": "",
            "content": "",
            "result": "2"
        },
        {
            "answer_id": "32837",
            "course_id": "47",
            "title": "焊接时，焊条作摆动的目的是：______。",
            "type": "2",
            "answer1": "控制熔化金属的流动和得到必要的焊缝宽度",
            "answer2": "控制熔化金属的流动和减少飞溅",
            "answer3": "减少飞溅和得到必要的焊缝宽度",
            "answer4": "减少焊接飞溅及焊接缺陷",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "33093",
            "course_id": "47",
            "title": "下列哪项不是碳钢药芯焊丝分类的依据______。",
            "type": "2",
            "answer1": "熔敷金属的力学性能",
            "answer2": "焊接位置",
            "answer3": "焊丝类别特点",
            "answer4": "焊接材料",
            "answer5": "",
            "content": "",
            "result": "4"
        },
        {
            "answer_id": "33349",
            "course_id": "47",
            "title": "我国射线探伤标准规定，焊缝质量分为四个等级，______是1级焊缝内允许存在缺陷。",
            "type": "2",
            "answer1": "裂纹",
            "answer2": "未熔合",
            "answer3": "气孔",
            "answer4": "条状夹渣",
            "answer5": "",
            "content": "",
            "result": "3"
        },
        {
            "answer_id": "32327",
            "course_id": "47",
            "title": "与一般低碳钢相比，16Mn的屈服点提高了40%~50%,是由于向其中加入了少量的______元素。",
            "type": "2",
            "answer1": "锰",
            "answer2": "镍",
            "answer3": "铬",
            "answer4": "铌",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "32583",
            "course_id": "47",
            "title": "常用的热处理方法有______、回火、退火、正火四种。",
            "type": "2",
            "answer1": "调质",
            "answer2": "淬火",
            "answer3": "低温回火",
            "answer4": "球化",
            "answer5": "",
            "content": "",
            "result": "2"
        },
        {
            "answer_id": "32839",
            "course_id": "47",
            "title": "______不属于焊接结构装配方法。",
            "type": "2",
            "answer1": "卡紧装配",
            "answer2": "装配夹具定位装配",
            "answer3": "用安装孔装配",
            "answer4": "划线定位装配",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "33095",
            "course_id": "47",
            "title": "焊接前，清理坡口表面上的油、铁锈、油污、______及其它有害杂质，保证焊接质量。",
            "type": "2",
            "answer1": "焊剂",
            "answer2": "水分",
            "answer3": "丙酮",
            "answer4": "汽油",
            "answer5": "",
            "content": "",
            "result": "2"
        },
        {
            "answer_id": "33351",
            "course_id": "47",
            "title": "实现熔化焊接，关键是要用一个能量集中、______的局部加热热源。",
            "type": "2",
            "answer1": "温度较高",
            "answer2": "较好",
            "answer3": "温度足够高",
            "answer4": "移动",
            "answer5": "",
            "content": "",
            "result": "3"
        },
        {
            "answer_id": "32329",
            "course_id": "47",
            "title": "逆变弧焊机主要由三相全波整流器、逆变器、降压变压器、______和电抗器组成。",
            "type": "2",
            "answer1": "变频变压器",
            "answer2": "饱和电抗器",
            "answer3": "升压变压器",
            "answer4": "低压整流器",
            "answer5": "",
            "content": "",
            "result": "4"
        },
        {
            "answer_id": "32585",
            "course_id": "47",
            "title": "铜及铜合金焊条是根据______来分类表示的。",
            "type": "2",
            "answer1": "焊态的焊缝机械性能",
            "answer2": "焊态的化学成分",
            "answer3": "熔敷金属的化学成分",
            "answer4": "用途",
            "answer5": "",
            "content": "",
            "result": "3"
        },
        {
            "answer_id": "32841",
            "course_id": "47",
            "title": "凡方向不随时间变化的电流就是直流电流，直流电流用字母______表示。",
            "type": "2",
            "answer1": "I",
            "answer2": "V",
            "answer3": "Q",
            "answer4": "R",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "33097",
            "course_id": "47",
            "title": "空气等离子切割6mm的不锈钢板的切割电流为______。",
            "type": "2",
            "answer1": "50A",
            "answer2": "30A",
            "answer3": "80A",
            "answer4": "100A",
            "answer5": "",
            "content": "",
            "result": "2"
        },
        {
            "answer_id": "33353",
            "course_id": "47",
            "title": "金属材料抵抗各种介质（大气、酸、碱、盐等）侵蚀的能力称为______。",
            "type": "2",
            "answer1": "抗氧化性",
            "answer2": "耐蚀性",
            "answer3": "耐热性",
            "answer4": "磁性",
            "answer5": "",
            "content": "",
            "result": "2"
        },
        {
            "answer_id": "32331",
            "course_id": "47",
            "title": "______是企业信誉的基础。",
            "type": "2",
            "answer1": "良好的产品质量和服务",
            "answer2": "大量的社会关系和服务",
            "answer3": "广泛的公关和广告宣传",
            "answer4": "较快的生产进度和产量",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "32587",
            "course_id": "47",
            "title": "气割用的乙炔气胶管工作压力为______。",
            "type": "2",
            "answer1": "0.5Mpa或1Mpa",
            "answer2": "0.5Mpa",
            "answer3": "1Mpa",
            "answer4": "0.8Mpa",
            "answer5": "",
            "content": "",
            "result": "4"
        },
        {
            "answer_id": "32843",
            "course_id": "47",
            "title": "在一定条件下，激光切割速度有一个最佳值，使切割的______最低。",
            "type": "2",
            "answer1": "激光平行度",
            "answer2": "激光功率",
            "answer3": "氧气浓度",
            "answer4": "表面粗糙度",
            "answer5": "",
            "content": "",
            "result": "4"
        },
        {
            "answer_id": "33099",
            "course_id": "47",
            "title": "在锅炉压力容器压力管道焊工考试中手工电弧焊的代号为______。",
            "type": "2",
            "answer1": "SMAW",
            "answer2": "GTAW",
            "answer3": "SAW",
            "answer4": "OFW",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "33355",
            "course_id": "47",
            "title": "刚性固定法用于薄板是很有效的，特别是用来防止由于焊缝纵向收缩而产生的______更有效。",
            "type": "2",
            "answer1": "弯曲变形",
            "answer2": "扭曲变形",
            "answer3": "波浪变形",
            "answer4": "角变形",
            "answer5": "",
            "content": "",
            "result": "3"
        },
        {
            "answer_id": "32333",
            "course_id": "47",
            "title": "牌号H08Mn2Si中“H”表示______。",
            "type": "2",
            "answer1": "焊条",
            "answer2": "焊芯",
            "answer3": "焊剂",
            "answer4": "焊丝",
            "answer5": "",
            "content": "",
            "result": "4"
        },
        {
            "answer_id": "32589",
            "course_id": "47",
            "title": "不是选择焊接电流时，所考虑的因素是：______。",
            "type": "2",
            "answer1": "焊接电源种类和极性",
            "answer2": "焊条直径",
            "answer3": "焊接位置",
            "answer4": "焊道层数及焊条类型",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "32845",
            "course_id": "47",
            "title": "《中华人民共和国消费者权益保护法》实施于______年。",
            "type": "2",
            "answer1": "1991",
            "answer2": "1992",
            "answer3": "1993",
            "answer4": "1994",
            "answer5": "",
            "content": "",
            "result": "3"
        },
        {
            "answer_id": "33101",
            "course_id": "47",
            "title": "焊条按药皮熔化后的熔渣特性可分为酸性焊条和______。",
            "type": "2",
            "answer1": "中性焊条",
            "answer2": "碱性焊条",
            "answer3": "碳钢焊条",
            "answer4": "特殊用途焊条",
            "answer5": "",
            "content": "",
            "result": "2"
        },
        {
            "answer_id": "33357",
            "course_id": "47",
            "title": "下列哪项不是焊接工艺评定报告中应包含的内容______。",
            "type": "2",
            "answer1": "施焊地点",
            "answer2": "弯曲试验记录",
            "answer3": "焊工姓名",
            "answer4": "无损检验记录",
            "answer5": "",
            "content": "",
            "result": "4"
        },
        {
            "answer_id": "32335",
            "course_id": "47",
            "title": "等离子切割主要应防电击、防电弧光辐射、防灰尘与烟气、______、放高频等。",
            "type": "2",
            "answer1": "防噪声",
            "answer2": "氧气",
            "answer3": "乙炔",
            "answer4": "丙烷",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "32591",
            "course_id": "47",
            "title": "下列说法不正确的是：______。",
            "type": "2",
            "answer1": "电焊钳不得放置于焊件或电源上，以防止启动电源时发生短路",
            "answer2": "焊工临时离开焊接现场时，不必切断电源",
            "answer3": "焊接场地有腐蚀性气体或湿度较大，必须作好隔离防护",
            "answer4": "焊接电源安装、检修应由电工专门负责",
            "answer5": "",
            "content": "",
            "result": "2"
        },
        {
            "answer_id": "32847",
            "course_id": "47",
            "title": "机械制图图纸的格式分为______两种。",
            "type": "2",
            "answer1": "有边框和无边框",
            "answer2": "有标题栏和无标题栏",
            "answer3": "留装订边和不留装订边",
            "answer4": "长方形和正方形",
            "answer5": "",
            "content": "",
            "result": "3"
        },
        {
            "answer_id": "33103",
            "course_id": "47",
            "title": "等离子切割时，在电极内缩量一定时，______一般在6～8mm。",
            "type": "2",
            "answer1": "喷嘴距离工件的高度",
            "answer2": "割嘴到电极",
            "answer3": "工件",
            "answer4": "喷嘴直径",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "33359",
            "course_id": "47",
            "title": "为了防止局部熔化的高温焊缝金属与空气接触而造成成分和性能的恶化，熔焊过程中都必须采取有效的______的保护措施。",
            "type": "2",
            "answer1": "隔离空气",
            "answer2": "隔离烟尘",
            "answer3": "隔离氧气",
            "answer4": "电弧",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "32337",
            "course_id": "47",
            "title": "气割用的氧气胶管工作压力为______。",
            "type": "2",
            "answer1": "1.5Mpa",
            "answer2": "15Mpa",
            "answer3": "12Mpa",
            "answer4": "8Mpa",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "32593",
            "course_id": "47",
            "title": "在焊接变形中波浪变形容易在厚度______的薄板结构中产生。",
            "type": "2",
            "answer1": "小于10mm",
            "answer2": "小于15mm",
            "answer3": "小于8mm",
            "answer4": "小于5mm",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "32849",
            "course_id": "47",
            "title": "激光器按照能量输出方式可分为：脉冲激光器和______。",
            "type": "2",
            "answer1": "连续激光器",
            "answer2": "交流激光器",
            "answer3": "直流激光器",
            "answer4": "电容放电激光器",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "33105",
            "course_id": "47",
            "title": "对激光切割质量有影响的激光器的固有特性有______。",
            "type": "2",
            "answer1": "光斑模式，激光波长、",
            "answer2": "激光输出功率、辅助气体及压力、切割速度、光程",
            "answer3": "光斑模式、光程",
            "answer4": "光斑模式、切割速度、光程",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "33361",
            "course_id": "47",
            "title": "下列那种直径的管子焊接时其角变形偏差值不准超过1/100______。",
            "type": "2",
            "answer1": "90mm",
            "answer2": "120mm",
            "answer3": "150mm",
            "answer4": "200mm",
            "answer5": "",
            "content": "",
            "result": "3"
        },
        {
            "answer_id": "32339",
            "course_id": "47",
            "title": "化学方程式xFe2O3+yCO=zFe+qCO2↑，其中x、y、z、q依次是______。",
            "type": "2",
            "answer1": "1、3、2、3",
            "answer2": "1、2、3、3",
            "answer3": "2、1、3、3",
            "answer4": "3、1、2、3",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "32595",
            "course_id": "47",
            "title": "焊缝基本符号“Y”是表示______焊缝。",
            "type": "2",
            "answer1": "V型",
            "answer2": "X型",
            "answer3": "∪",
            "answer4": "带钝边V型",
            "answer5": "",
            "content": "",
            "result": "3"
        },
        {
            "answer_id": "32851",
            "course_id": "47",
            "title": "在立方体的8个顶点和六个面的中心各有一个原子的晶格类型是______。",
            "type": "2",
            "answer1": "面心立方晶格",
            "answer2": "体心立方晶格",
            "answer3": "密排六方晶格",
            "answer4": "以上都不是",
            "answer5": "",
            "content": "",
            "result": "3"
        },
        {
            "answer_id": "33107",
            "course_id": "47",
            "title": "水再压缩等离子弧切割时，利用水的特性，可以吸收切割过程中所形成的______、金属粒子、灰尘、烟气、紫外线等，大大地改善了操作工的工作条件。",
            "type": "2",
            "answer1": "等离子",
            "answer2": "强烈弧光",
            "answer3": "气流",
            "answer4": "水流",
            "answer5": "",
            "content": "",
            "result": "2"
        },
        {
            "answer_id": "33363",
            "course_id": "47",
            "title": "直流弧焊发电机下降外特性的获得，一般是使工作磁通随______的增加而迅速降低。",
            "type": "2",
            "answer1": "焊接电压",
            "answer2": "焊接速度",
            "answer3": "焊接电流",
            "answer4": "焊接线能量",
            "answer5": "",
            "content": "",
            "result": "3"
        },
        {
            "answer_id": "32341",
            "course_id": "47",
            "title": "钢材的矫正一般是在冷态下进行的，只有当钢材的弯曲程度相当严重，在冷态情况下矫正会损伤其力学性能时，才采取______矫正。",
            "type": "2",
            "answer1": "手工矫正",
            "answer2": "矫正机床",
            "answer3": "加热状态下",
            "answer4": "多次矫正",
            "answer5": "",
            "content": "",
            "result": "3"
        },
        {
            "answer_id": "32597",
            "course_id": "47",
            "title": "焊条电弧焊中将焊条末端对准焊件，而后将焊条在焊件表面划擦一下，当电弧引燃后趁金属还没有开始大量熔化的一瞬间，立即使焊条末端与被焊表面的距离维持在2~4mm的距离的引燃电弧的方法称为______。",
            "type": "2",
            "answer1": "接触引弧法",
            "answer2": "非接触引弧法",
            "answer3": "直击引弧法",
            "answer4": "划擦引弧法",
            "answer5": "",
            "content": "",
            "result": "4"
        },
        {
            "answer_id": "32853",
            "course_id": "47",
            "title": "______是社会道德要求在职业行为和职业关系中的具体体现。",
            "type": "2",
            "answer1": "人际关系",
            "answer2": "生产关系",
            "answer3": "经济关系",
            "answer4": "职业道德",
            "answer5": "",
            "content": "",
            "result": "4"
        },
        {
            "answer_id": "33109",
            "course_id": "47",
            "title": "管道定位焊时，定位焊缝一般不允许在______位置。",
            "type": "2",
            "answer1": "平",
            "answer2": "立",
            "answer3": "仰",
            "answer4": "爬坡",
            "answer5": "",
            "content": "",
            "result": "3"
        },
        {
            "answer_id": "33365",
            "course_id": "47",
            "title": "在质量方面的指挥和控制活动，通常包括制定质量方针和质量目标以及质量策划、质量控制、质量保证和______。",
            "type": "2",
            "answer1": "质量评价",
            "answer2": "质量改进",
            "answer3": "质量检验",
            "answer4": "质量实现",
            "answer5": "",
            "content": "",
            "result": "2"
        },
        {
            "answer_id": "32343",
            "course_id": "47",
            "title": "在碳钢埋弧焊焊剂F4A2-H08A中第一个“A”表示______。",
            "type": "2",
            "answer1": "热处理状态为焊态",
            "answer2": "熔敷金属抗拉强度的最小值",
            "answer3": "焊接位置",
            "answer4": "熔敷金属化学成分代号",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "32599",
            "course_id": "47",
            "title": "下列哪项不是弧焊电源铭牌中标明的参数______。",
            "type": "2",
            "answer1": "负载持续率",
            "answer2": "最大焊接电流",
            "answer3": "一次电压",
            "answer4": "功率",
            "answer5": "",
            "content": "",
            "result": "2"
        },
        {
            "answer_id": "32855",
            "course_id": "47",
            "title": "对于500A以下的焊条电弧焊用电弧焊电源，其负载持续率为______。",
            "type": "2",
            "answer1": "1",
            "answer2": "0.8",
            "answer3": "0.6",
            "answer4": "0.25",
            "answer5": "",
            "content": "",
            "result": "3"
        },
        {
            "answer_id": "33111",
            "course_id": "47",
            "title": "气割方钢按方钢的______、气割圆钢按圆钢的直径，选择割炬和割嘴，便可以顺利切割。",
            "type": "2",
            "answer1": "边长",
            "answer2": "周长",
            "answer3": "长度",
            "answer4": "粗糙度",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "33367",
            "course_id": "47",
            "title": "再热裂纹一般发生在含______等元素的高强度低合金钢的热影响区中。",
            "type": "2",
            "answer1": "镍、铬或钨",
            "answer2": "铬、钼或钒",
            "answer3": "镍、钼或钒",
            "answer4": "钛、铬或钨",
            "answer5": "",
            "content": "",
            "result": "2"
        },
        {
            "answer_id": "32345",
            "course_id": "47",
            "title": "电弧焊电源容量大小的选择，应按所需______，选择电弧焊电源。",
            "type": "2",
            "answer1": "焊接电压的大小",
            "answer2": "焊接电流的大小",
            "answer3": "焊接电流密度的大小",
            "answer4": "焊接空载电压的大小",
            "answer5": "",
            "content": "",
            "result": "2"
        },
        {
            "answer_id": "32601",
            "course_id": "47",
            "title": "将碳素钢分为沸腾钢、半镇静钢、镇静钢和特殊镇静钢是根据冶炼时的______方法来划分的。",
            "type": "2",
            "answer1": "脱氮",
            "answer2": "脱氢",
            "answer3": "脱氧",
            "answer4": "脱硫",
            "answer5": "",
            "content": "",
            "result": "3"
        },
        {
            "answer_id": "32857",
            "course_id": "47",
            "title": "以单质形态存在的元素叫做元素的______。",
            "type": "2",
            "answer1": "单态",
            "answer2": "双态",
            "answer3": "游离态",
            "answer4": "化合态",
            "answer5": "",
            "content": "",
            "result": "3"
        },
        {
            "answer_id": "33113",
            "course_id": "47",
            "title": "在熔炼焊剂HJ431中的“1”表示______。",
            "type": "2",
            "answer1": "含氧量",
            "answer2": "含锰量",
            "answer3": "含钙量",
            "answer4": "焊剂牌号编号",
            "answer5": "",
            "content": "",
            "result": "4"
        },
        {
            "answer_id": "33369",
            "course_id": "47",
            "title": "合金中一种物质均匀地溶解在另一种物质内形成的单相晶体结构称为______。",
            "type": "2",
            "answer1": "固溶体",
            "answer2": "化合物",
            "answer3": "机械混合物",
            "answer4": "混合物",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "32347",
            "course_id": "47",
            "title": "激光加工工作台应用玻璃等屏蔽，防止______。",
            "type": "2",
            "answer1": "反射光",
            "answer2": "投射光",
            "answer3": "照射",
            "answer4": "辐射",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "32603",
            "course_id": "47",
            "title": "焊接从业人员应刻苦钻研业务，认真学习______，重视岗位技能训练，努力提高劳动者素质。",
            "type": "2",
            "answer1": "管理能力",
            "answer2": "人际交往",
            "answer3": "专业知识",
            "answer4": "焊接质量",
            "answer5": "",
            "content": "",
            "result": "3"
        },
        {
            "answer_id": "32859",
            "course_id": "47",
            "title": "下列说法正确是：______。",
            "type": "2",
            "answer1": "焊缝外观质量在很大程度上反映出焊工对工艺规范执行情况",
            "answer2": "焊缝外观质量在很大程度上反映出焊工职业道德水平",
            "answer3": "焊缝外观质量在很大程度上反映出焊工操作技能水平",
            "answer4": "焊缝外观质量在很大程度上反映出焊工理论水平高低",
            "answer5": "",
            "content": "",
            "result": "4"
        },
        {
            "answer_id": "33115",
            "course_id": "47",
            "title": "有关中华民族传统美德下面说法不正确的是______。",
            "type": "2",
            "answer1": "中华民族传统美德，是指中国五千年历史流传下来，具有影响，可以继承，并得到不断创新发展，有益于下代的优秀道德遗产",
            "answer2": "中华民族传统美德概括起来就是：优秀的道德品质、优良的民族精神、崇高的民族气节、高尚的民族情感以及良好的民族习惯的总和",
            "answer3": "中华民族传统美德提倡身体力行的基本道德观念和行为准则",
            "answer4": "中华民族传统美德形成于近代",
            "answer5": "",
            "content": "",
            "result": "4"
        },
        {
            "answer_id": "33371",
            "course_id": "47",
            "title": "纯铁在常温下属于______。",
            "type": "2",
            "answer1": "面心立方晶格",
            "answer2": "体心立方晶格",
            "answer3": "密排六方晶格",
            "answer4": "以上都不是",
            "answer5": "",
            "content": "",
            "result": "2"
        },
        {
            "answer_id": "32349",
            "course_id": "47",
            "title": "聚焦后的激光，由于功率密度十分大，伤害力更大，会对______造成严重烧伤。",
            "type": "2",
            "answer1": "皮肤",
            "answer2": "骨骼",
            "answer3": "神经",
            "answer4": "血液",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "32605",
            "course_id": "47",
            "title": "下列焊接试验中属于机械性能试验的是______。",
            "type": "2",
            "answer1": "水压试验",
            "answer2": "冲击试验",
            "answer3": "金相检验",
            "answer4": "射线探伤",
            "answer5": "",
            "content": "",
            "result": "2"
        },
        {
            "answer_id": "32861",
            "course_id": "47",
            "title": "在机械制图中图形与图纸不论放大或缩小，在标注尺寸时，应按机件______标注。",
            "type": "2",
            "answer1": "图形放大或缩小后的尺寸",
            "answer2": "实际所画图形尺寸",
            "answer3": "实际尺寸",
            "answer4": "图形比例尺寸",
            "answer5": "",
            "content": "",
            "result": "3"
        },
        {
            "answer_id": "33117",
            "course_id": "47",
            "title": "下列______不属于低温钢。",
            "type": "2",
            "answer1": "16Mn",
            "answer2": "09Mn2V",
            "answer3": "16MnCu",
            "answer4": "15Cr1MoV",
            "answer5": "",
            "content": "",
            "result": "4"
        },
        {
            "answer_id": "33373",
            "course_id": "47",
            "title": "易燃物品距离钨极氩弧焊场所不得小于______m。",
            "type": "2",
            "answer1": "3",
            "answer2": "5",
            "answer3": "13",
            "answer4": "15",
            "answer5": "",
            "content": "",
            "result": "3"
        },
        {
            "answer_id": "32351",
            "course_id": "47",
            "title": "等离子弧是通过机械压缩、热收缩和______三种压缩作用获得的。",
            "type": "2",
            "answer1": "磁收缩",
            "answer2": "高温压缩",
            "answer3": "高速压缩",
            "answer4": "高能压缩",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "32607",
            "course_id": "47",
            "title": "______钢是我国生产最早，也是目前焊接生产上用量最大的普通低合金高强度钢。",
            "type": "2",
            "answer1": "16Mn",
            "answer2": "15MnVN",
            "answer3": "12Mn",
            "answer4": "16MnNb",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "32863",
            "course_id": "47",
            "title": "下列哪项不是焊接变形造成的危害______。",
            "type": "2",
            "answer1": "降低结构形状的尺寸精度和美观",
            "answer2": "降低生产率",
            "answer3": "降低接头性能",
            "answer4": "使钢材组织发生变化",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "33119",
            "course_id": "47",
            "title": "碳钢焊条是______来确定强度等级的。",
            "type": "2",
            "answer1": "镍、铬含量",
            "answer2": "化学成分",
            "answer3": "熔敷金属抗拉强度的最小值",
            "answer4": "冲击韧度",
            "answer5": "",
            "content": "",
            "result": "3"
        },
        {
            "answer_id": "33375",
            "course_id": "47",
            "title": "______不包括在职业道德的意义中。",
            "type": "2",
            "answer1": "有利于企业体制改革",
            "answer2": "有利于推动社会主义物质文明建设",
            "answer3": "有利于企业的建设和发展",
            "answer4": "有利于个人的提高和发展",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "32353",
            "course_id": "47",
            "title": "当一个氧气瓶无法满足要求，可用多个氧气瓶______起来供气。",
            "type": "2",
            "answer1": "并联",
            "answer2": "串联",
            "answer3": "串并联",
            "answer4": "",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "32609",
            "course_id": "47",
            "title": "在铁碳平衡状态图中，表示碳的质量分数低于0.8%的钢在缓慢冷却时由奥氏体开始析出铁素体的温度的线是______。",
            "type": "2",
            "answer1": "ACD线",
            "answer2": "GS线",
            "answer3": "ES线",
            "answer4": "PSK线",
            "answer5": "",
            "content": "",
            "result": "3"
        },
        {
            "answer_id": "32865",
            "course_id": "47",
            "title": "等离子切割割枪一般由电极、______、喷嘴、冷却水套、中间绝缘体、气室、水路、气路、馈电体等组成。",
            "type": "2",
            "answer1": "电极夹头",
            "answer2": "套棒",
            "answer3": "枪身",
            "answer4": "水管",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "33121",
            "course_id": "47",
            "title": "大直径圆钢与大尺寸方钢切割时，由于尺寸超过割炬的切割能力，整个割口不能______完成，必须通过改变切割方向，才能达到割透的目的。",
            "type": "2",
            "answer1": "一次",
            "answer2": "两次",
            "answer3": "三次",
            "answer4": "四次",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "33377",
            "course_id": "47",
            "title": "下列焊接试验中能够测定金属塑性的是______。",
            "type": "2",
            "answer1": "弯曲试验",
            "answer2": "冲击试验",
            "answer3": "硬度试验",
            "answer4": "拉伸试验",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "32355",
            "course_id": "47",
            "title": "文明生产的具体要求不包括______。",
            "type": "2",
            "answer1": "技术熟练",
            "answer2": "相互学习",
            "answer3": "纪律严明",
            "answer4": "能说会道",
            "answer5": "",
            "content": "",
            "result": "4"
        },
        {
            "answer_id": "32611",
            "course_id": "47",
            "title": "以下关于“节俭”的说法，你认为正确的是______。",
            "type": "2",
            "answer1": "节俭是美德，但不利于拉动经济增长",
            "answer2": "节俭是物质匮乏时代的需要，不适应现代社会",
            "answer3": "生产的发展主要靠节俭来实现",
            "answer4": "节俭不仅具有道德价值，也具有经济价值",
            "answer5": "",
            "content": "",
            "result": "4"
        },
        {
            "answer_id": "32867",
            "course_id": "47",
            "title": "焊条直径为3.2mm时，焊条长度应在______范围之内。",
            "type": "2",
            "answer1": "250mm～300mm",
            "answer2": "250mm～350mm",
            "answer3": "350mm～450mm",
            "answer4": "200mm～250mm",
            "answer5": "",
            "content": "",
            "result": "3"
        },
        {
            "answer_id": "33123",
            "course_id": "47",
            "title": "______的来源是由金属及非金属物质在过热条件下产生的高温蒸气经氧化、冷凝而形成的。",
            "type": "2",
            "answer1": "金属飞溅",
            "answer2": "放射线",
            "answer3": "焊接烟尘",
            "answer4": "焊接弧光",
            "answer5": "",
            "content": "",
            "result": "3"
        },
        {
            "answer_id": "33379",
            "course_id": "47",
            "title": "企业文化的功能主要表现在教育功能、凝聚功能、约束功能和______。",
            "type": "2",
            "answer1": "管理功能",
            "answer2": "学习功能",
            "answer3": "认识功能",
            "answer4": "协调功能",
            "answer5": "",
            "content": "",
            "result": "4"
        },
        {
            "answer_id": "32357",
            "course_id": "47",
            "title": "CO2气体保护焊焊接时，CO2气体在高温下将发生分解，生成CO气体以及产生大量的______，因此要保证工作环境有良好的通风。",
            "type": "2",
            "answer1": "氮气",
            "answer2": "烟尘",
            "answer3": "臭氧",
            "answer4": "碳的颗粒",
            "answer5": "",
            "content": "",
            "result": "2"
        },
        {
            "answer_id": "32613",
            "course_id": "47",
            "title": "在机械制图中图形不论放大或缩小，在标注______时，应按机件实际尺寸标注。",
            "type": "2",
            "answer1": "代号",
            "answer2": "图幅",
            "answer3": "比例",
            "answer4": "尺寸",
            "answer5": "",
            "content": "",
            "result": "4"
        },
        {
            "answer_id": "32869",
            "course_id": "47",
            "title": "火焰矫正法矫正焊接变形时，加热温度最低不得低于______。",
            "type": "2",
            "answer1": "300℃",
            "answer2": "200℃",
            "answer3": "400℃",
            "answer4": "350℃",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "33125",
            "course_id": "47",
            "title": "气割法兰时，为了使外圆更加规则，也可以借助______切割。",
            "type": "2",
            "answer1": "划规",
            "answer2": "直尺",
            "answer3": "卡尺",
            "answer4": "量规",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "33381",
            "course_id": "47",
            "title": "在容器或舱室内进行气刨作业时，需要使用电灯照明时，其电压不应超过______。",
            "type": "2",
            "answer1": "36V",
            "answer2": "70V",
            "answer3": "45V",
            "answer4": "90V",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "32359",
            "course_id": "47",
            "title": "在熔炼焊剂HJ431中的“4”表示______。",
            "type": "2",
            "answer1": "含硅量",
            "answer2": "含锰量",
            "answer3": "含氟量",
            "answer4": "含氧量",
            "answer5": "",
            "content": "",
            "result": "2"
        },
        {
            "answer_id": "32615",
            "course_id": "47",
            "title": "中华民族传统美德的核心是______。",
            "type": "2",
            "answer1": "集体主义",
            "answer2": "爱国主义",
            "answer3": "仁爱主义",
            "answer4": "亲善友好",
            "answer5": "",
            "content": "",
            "result": "2"
        },
        {
            "answer_id": "32871",
            "course_id": "47",
            "title": "使用碱性焊条焊接时常采用______。",
            "type": "2",
            "answer1": "交流焊接电源",
            "answer2": "直流反接",
            "answer3": "直流正接",
            "answer4": "交流反接",
            "answer5": "",
            "content": "",
            "result": "2"
        },
        {
            "answer_id": "33127",
            "course_id": "47",
            "title": "电焊机空载电压不能过高。一般在______伏之间。",
            "type": "2",
            "answer1": "60～90",
            "answer2": "80～120",
            "answer3": "60～120",
            "answer4": "160～220",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "33383",
            "course_id": "47",
            "title": "等离子切割空载电压还与割枪结构、喷嘴至工件距离、______有关。",
            "type": "2",
            "answer1": "切割速度",
            "answer2": "气体流量",
            "answer3": "切割电流",
            "answer4": "喷嘴孔径",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "32105",
            "course_id": "47",
            "title": "电路的基本组成部分有:电源、_______和连接导线。",
            "type": "2",
            "answer1": "电容",
            "answer2": "电阻",
            "answer3": "电感",
            "answer4": "负载",
            "answer5": "",
            "content": "",
            "result": "4"
        },
        {
            "answer_id": "32361",
            "course_id": "47",
            "title": "常用的气割减压器有氧气减压器、______、丙烷减压器等。",
            "type": "2",
            "answer1": "乙炔减压器",
            "answer2": "氩气减压器",
            "answer3": "石油液化气减压器",
            "answer4": "混合气减压器",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "32617",
            "course_id": "47",
            "title": "下列焊接检验方法中属于非破坏性检验的是______。",
            "type": "2",
            "answer1": "硬度试验",
            "answer2": "冲击试验",
            "answer3": "疲劳试验",
            "answer4": "射线探伤",
            "answer5": "",
            "content": "",
            "result": "4"
        },
        {
            "answer_id": "32873",
            "course_id": "47",
            "title": "按照焊剂中添加的脱氧剂、合金剂可以将焊剂分为中性焊剂、活性焊剂和______。",
            "type": "2",
            "answer1": "粘结焊剂",
            "answer2": "烧结焊剂",
            "answer3": "合金焊剂",
            "answer4": "高锰焊剂",
            "answer5": "",
            "content": "",
            "result": "3"
        },
        {
            "answer_id": "33129",
            "course_id": "47",
            "title": "焊接烟尘的来源是由金属及非金属物质在______条件下产生的高温蒸气经氧化、冷凝而形成的。",
            "type": "2",
            "answer1": "过热",
            "answer2": "封闭",
            "answer3": "野外作业",
            "answer4": "室内作业",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "33385",
            "course_id": "47",
            "title": "下列焊接缺陷中不属于外部缺陷的是______。",
            "type": "2",
            "answer1": "咬边",
            "answer2": "夹渣",
            "answer3": "弧坑",
            "answer4": "表面气孔",
            "answer5": "",
            "content": "",
            "result": "2"
        },
        {
            "answer_id": "32107",
            "course_id": "47",
            "title": "激光的特点为亮度高、方向性好、______。",
            "type": "2",
            "answer1": "单色性好",
            "answer2": "焦点唯一",
            "answer3": "光谱宽度宽",
            "answer4": "热源集中",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "32363",
            "course_id": "47",
            "title": "气割时，切口偏离切割线分为______和曲线切口偏离切割线。",
            "type": "2",
            "answer1": "直线切口不齐",
            "answer2": "切口过宽",
            "answer3": "切口熔化",
            "answer4": "切割面不良",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "32619",
            "course_id": "47",
            "title": "下列______是交流方波弧焊电源的优点。",
            "type": "2",
            "answer1": "磁偏吹小",
            "answer2": "电弧稳定性好",
            "answer3": "结构简单",
            "answer4": "空载损耗小",
            "answer5": "",
            "content": "",
            "result": "2"
        },
        {
            "answer_id": "32875",
            "course_id": "47",
            "title": "定位焊时容易产生未焊透缺陷，故焊接电流应比正式焊接时高______。",
            "type": "2",
            "answer1": "2%～5%",
            "answer2": "10%～15%",
            "answer3": "5%～10%",
            "answer4": "40%～50%",
            "answer5": "",
            "content": "",
            "result": "2"
        },
        {
            "answer_id": "33131",
            "course_id": "47",
            "title": "物质单位体积所具有的质量称为______。",
            "type": "2",
            "answer1": "密度",
            "answer2": "熔点",
            "answer3": "导热性",
            "answer4": "耐蚀性",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "33387",
            "course_id": "47",
            "title": "还原反应是含氧化合物里的______被夺去的反应。",
            "type": "2",
            "answer1": "碳",
            "answer2": "氢",
            "answer3": "氧",
            "answer4": "氮",
            "answer5": "",
            "content": "",
            "result": "3"
        },
        {
            "answer_id": "32109",
            "course_id": "47",
            "title": "表示物质导电性能的物理量是______。",
            "type": "2",
            "answer1": "电感",
            "answer2": "电势",
            "answer3": "电阻",
            "answer4": "电阻率",
            "answer5": "",
            "content": "",
            "result": "4"
        },
        {
            "answer_id": "32365",
            "course_id": "47",
            "title": "平板定位焊时，______，防止焊接过程中收缩造成未焊段坡口间隙变窄而影响焊接。",
            "type": "2",
            "answer1": "始焊端可以少焊些，终焊端应多焊些",
            "answer2": "始焊端可以多焊些，终焊端应少焊些",
            "answer3": "始焊端可以少焊些，终焊端可以不焊",
            "answer4": "始焊端可不焊，终焊端应多焊些",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "32621",
            "course_id": "47",
            "title": "装配图是表达机器或部件的______、结构形状和装配关系的图样。",
            "type": "2",
            "answer1": "加工工艺",
            "answer2": "尺寸大小",
            "answer3": "工作原理",
            "answer4": "加工精度",
            "answer5": "",
            "content": "",
            "result": "3"
        },
        {
            "answer_id": "32877",
            "course_id": "47",
            "title": "焊电源型号的大类名称中字母______表示弧焊整流器。",
            "type": "2",
            "answer1": "A",
            "answer2": "X",
            "answer3": "B",
            "answer4": "Z",
            "answer5": "",
            "content": "",
            "result": "4"
        },
        {
            "answer_id": "33133",
            "course_id": "47",
            "title": "等离子切割割口质量主要以割口宽度、割口垂直度、割口表面粗糙度、______、割口底部熔瘤及割口热影响区硬度和宽度来评定。",
            "type": "2",
            "answer1": "割纹深度",
            "answer2": "割口长度",
            "answer3": "割口倾斜度",
            "answer4": "割口烧损",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "33389",
            "course_id": "47",
            "title": "铝及铝合金常用的牌号为HS311的焊丝其型号为______。",
            "type": "2",
            "answer1": "Sal-3",
            "answer2": "SalMg-5",
            "answer3": "SalSi-1",
            "answer4": "SAlMn",
            "answer5": "",
            "content": "",
            "result": "3"
        },
        {
            "answer_id": "32111",
            "course_id": "47",
            "title": "插入式管板焊接宏观金相试验时，试件在接头根部熔深不小于______。",
            "type": "2",
            "answer1": "0.2mm",
            "answer2": "0.5mm",
            "answer3": "0.7mm",
            "answer4": "0.9mm",
            "answer5": "",
            "content": "",
            "result": "2"
        },
        {
            "answer_id": "32367",
            "course_id": "47",
            "title": "氩气的化学元素符号是______。",
            "type": "2",
            "answer1": "Ar",
            "answer2": "He",
            "answer3": "Fe",
            "answer4": "Al",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "32623",
            "course_id": "47",
            "title": "一般的等离子切割不用保护气，工作气体和______从同一喷嘴内喷出",
            "type": "2",
            "answer1": "保护气体",
            "answer2": "切割气体",
            "answer3": "介质气体",
            "answer4": "引弧气体",
            "answer5": "",
            "content": "",
            "result": "2"
        },
        {
            "answer_id": "32879",
            "course_id": "47",
            "title": "下列______是职业道德的特点的重要组成部分。",
            "type": "2",
            "answer1": "社会主义企业建设",
            "answer2": "社会主义道德标准",
            "answer3": "社会主义道德体系",
            "answer4": "社会主义道德规范",
            "answer5": "",
            "content": "",
            "result": "3"
        },
        {
            "answer_id": "33135",
            "course_id": "47",
            "title": "二氧化碳的化学分子式是______。",
            "type": "2",
            "answer1": "CO2",
            "answer2": "O2",
            "answer3": "Ar",
            "answer4": "He",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "33391",
            "course_id": "47",
            "title": "常用的气割减压器有______、乙炔减压器、丙烷减压器等。",
            "type": "2",
            "answer1": "氧气减压器",
            "answer2": "氩气减压器",
            "answer3": "石油液化气减压器",
            "answer4": "混合气减压器",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "32113",
            "course_id": "47",
            "title": "等离子切割速度主要决定于材质板厚、切割电流、______、气体种类及流量，喷嘴结构和合适的后拖量等。",
            "type": "2",
            "answer1": "切割电压",
            "answer2": "气路",
            "answer3": "水路",
            "answer4": "电路",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "32369",
            "course_id": "47",
            "title": "闪光对焊机周围______m内应无易燃易爆物品，并备有专用的消防灭火器材。",
            "type": "2",
            "answer1": "5",
            "answer2": "8",
            "answer3": "10",
            "answer4": "15",
            "answer5": "",
            "content": "",
            "result": "4"
        },
        {
            "answer_id": "32625",
            "course_id": "47",
            "title": "电弧焊电源容量大小的选择，应按所需______的大小，选择电弧焊电源。",
            "type": "2",
            "answer1": "焊接电流",
            "answer2": "焊接电压",
            "answer3": "焊接速度",
            "answer4": "焊接线能量",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "32881",
            "course_id": "47",
            "title": "凡是已制订好的焊工工艺文件，焊工在生产中______。",
            "type": "2",
            "answer1": "必须严格执行",
            "answer2": "必要时进行修改",
            "answer3": "可以灵活运用",
            "answer4": "根据实际进行发挥",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "33137",
            "course_id": "47",
            "title": "原子是由居于中心的______和核外电子构成的。",
            "type": "2",
            "answer1": "原子核",
            "answer2": "核外电子",
            "answer3": "中子",
            "answer4": "离子",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "33393",
            "course_id": "47",
            "title": "等离子弧切割方法除一般型外，派生出的型式有水再压缩等离子弧切割、______或水再压缩空气等离子弧切割方法。",
            "type": "2",
            "answer1": "非转移型",
            "answer2": "空气等离子弧切割",
            "answer3": "常用型",
            "answer4": "非联合型",
            "answer5": "",
            "content": "",
            "result": "2"
        },
        {
            "answer_id": "32115",
            "course_id": "47",
            "title": "在锅炉压力容器压力管道焊工考试中下列钢材为Ⅱ类的是______。",
            "type": "2",
            "answer1": "20",
            "answer2": "Q235",
            "answer3": "12Cr1MoV",
            "answer4": "1Cr18Ni9Ti",
            "answer5": "",
            "content": "",
            "result": "2"
        },
        {
            "answer_id": "32371",
            "course_id": "47",
            "title": "在下列现象中那些不是因焊接速度过慢所引起的______。",
            "type": "2",
            "answer1": "热影响区宽度增加",
            "answer2": "焊接接头的晶粒变粗",
            "answer3": "焊接变形增大",
            "answer4": "焊接飞溅增加",
            "answer5": "",
            "content": "",
            "result": "4"
        },
        {
            "answer_id": "32627",
            "course_id": "47",
            "title": "使用非法印制、伪造、涂改、倒卖、出租、出借《特种设备作业人员证》的，处以______以下罚款，构成犯罪的，依法追究刑事责任。",
            "type": "2",
            "answer1": "500元",
            "answer2": "1000元",
            "answer3": "3000元",
            "answer4": "5000元",
            "answer5": "",
            "content": "",
            "result": "2"
        },
        {
            "answer_id": "32883",
            "course_id": "47",
            "title": "交流电路中的三个电势之间的相位差相等，同为______。",
            "type": "2",
            "answer1": "45°",
            "answer2": "90°",
            "answer3": "100°",
            "answer4": "120°",
            "answer5": "",
            "content": "",
            "result": "4"
        },
        {
            "answer_id": "33139",
            "course_id": "47",
            "title": "下列焊剂中属于低合金钢焊剂的是______。",
            "type": "2",
            "answer1": "F4A2-H08A",
            "answer2": "F5121-H08MnMoA",
            "answer3": "F308L-H00Cr21Ni10",
            "answer4": "HJ431",
            "answer5": "",
            "content": "",
            "result": "4"
        },
        {
            "answer_id": "33395",
            "course_id": "47",
            "title": "下列焊接缺陷中不属于内部缺陷的是______。",
            "type": "2",
            "answer1": "咬边",
            "answer2": "夹渣",
            "answer3": "未熔合",
            "answer4": "未焊透",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "32117",
            "course_id": "47",
            "title": "激光割炬包括切割喷嘴、______、氧气压力表、透镜冷却水套、聚焦透镜、反射镜冷却水套、反射镜、放大控制及驱动电路、位置传感器等。",
            "type": "2",
            "answer1": "激光器",
            "answer2": "聚焦系统",
            "answer3": "氧气进气管",
            "answer4": "光束检测器",
            "answer5": "",
            "content": "",
            "result": "3"
        },
        {
            "answer_id": "32373",
            "course_id": "47",
            "title": "常用的气割减压器有氧气减压器、乙炔减压器、______等。",
            "type": "2",
            "answer1": "丙烷减压器",
            "answer2": "氩气减压器",
            "answer3": "石油液化气减压器",
            "answer4": "混合气减压器",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "32629",
            "course_id": "47",
            "title": "激光焊设备中，光束检测器有两个作用，一是可随时检测激光器的输出功率，二是可以检测激光束______上的能量分布，以确定激光器的输出模式。",
            "type": "2",
            "answer1": "横断面",
            "answer2": "中断面",
            "answer3": "长度",
            "answer4": "宽度",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "32885",
            "course_id": "47",
            "title": "下列材料中属于晶体的是______。",
            "type": "2",
            "answer1": "食盐",
            "answer2": "松香",
            "answer3": "玻璃",
            "answer4": "沥青",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "33141",
            "course_id": "47",
            "title": "氧-乙炔切割时，出现鸣暴和回火现象的主要原因是：______。",
            "type": "2",
            "answer1": "火焰性质及切割氧气压力选择不正确",
            "answer2": "割嘴堵塞或乙炔的喷出的速度小于燃烧速度",
            "answer3": "割嘴与工件倾斜角度选择不正确",
            "answer4": "预热火焰的长度及割件的厚度不匹配",
            "answer5": "",
            "content": "",
            "result": "2"
        },
        {
            "answer_id": "33397",
            "course_id": "47",
            "title": "碳素结构钢的牌号采用屈服点的字母“Q”、______和质量等级、脱氧方式等符号来表示。",
            "type": "2",
            "answer1": "抗拉强度的数值",
            "answer2": "冲击韧度的数值",
            "answer3": "屈服点的数值",
            "answer4": "伸长率的数值",
            "answer5": "",
            "content": "",
            "result": "3"
        },
        {
            "answer_id": "32119",
            "course_id": "47",
            "title": "焊条直径为2.0mm时，焊条长度应在______范围之内。",
            "type": "2",
            "answer1": "200mm～250mm",
            "answer2": "250mm～350mm",
            "answer3": "100mm～150mm",
            "answer4": "150mm～200mm",
            "answer5": "",
            "content": "",
            "result": "2"
        },
        {
            "answer_id": "32375",
            "course_id": "47",
            "title": "下列______是金属材料力学性能的指标。",
            "type": "2",
            "answer1": "强度",
            "answer2": "导热性",
            "answer3": "导电性",
            "answer4": "磁性",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "32631",
            "course_id": "47",
            "title": "氧气的化学分子式是______。",
            "type": "2",
            "answer1": "CO2",
            "answer2": "O2",
            "answer3": "Ar",
            "answer4": "He",
            "answer5": "",
            "content": "",
            "result": "2"
        },
        {
            "answer_id": "32887",
            "course_id": "47",
            "title": "以下有关对工作认真负责的说法正确的是______。",
            "type": "2",
            "answer1": "焊接过程中注意层间清理",
            "answer2": "焊接工作结束后，焊机留给别人关闭",
            "answer3": "焊接工作完成数量越多越好，质量并不重要",
            "answer4": "焊接中焊条头随意丢弃",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "33143",
            "course_id": "47",
            "title": "下图所示表示的是______。",
            "type": "2",
            "answer1": "同径正三通管道双线图",
            "answer2": "异径正三通管道双线图",
            "answer3": "单线图",
            "answer4": "斜三通管道的立面图",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "33399",
            "course_id": "47",
            "title": "下列关于创新的论述正确的是______。",
            "type": "2",
            "answer1": "创新与继承根本对立",
            "answer2": "创新就是独立自主",
            "answer3": "创新是民族进步的灵魂",
            "answer4": "创新不需要引进国外新技术",
            "answer5": "",
            "content": "",
            "result": "3"
        },
        {
            "answer_id": "32121",
            "course_id": "47",
            "title": "激光的偏转和聚焦系统中反射镜用于改变光束的方向，球面反射镜或透镜用来______。",
            "type": "2",
            "answer1": "提高速度",
            "answer2": "聚焦",
            "answer3": "提高亮度",
            "answer4": "拓展频谱",
            "answer5": "",
            "content": "",
            "result": "2"
        },
        {
            "answer_id": "32377",
            "course_id": "47",
            "title": "槽钢切割的工艺方法与角钢类似，均应从腿的______起割，至腰的内侧位置停止，将割炬转为垂直于腰的外表面切割至另一腿的内侧停止，转为切割最后一条腿，至割完结束。",
            "type": "2",
            "answer1": "边缘",
            "answer2": "中心",
            "answer3": "后侧",
            "answer4": "前侧",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "32633",
            "course_id": "47",
            "title": "目前常用的钨极氩弧焊的电极材料是纯钨极、钍钨极和______。",
            "type": "2",
            "answer1": "铜钨极",
            "answer2": "铪钨极",
            "answer3": "锆钨极",
            "answer4": "铈钨极",
            "answer5": "",
            "content": "",
            "result": "4"
        },
        {
            "answer_id": "32889",
            "course_id": "47",
            "title": "关于勤俭节约的现代意义，你认为正确的是______。",
            "type": "2",
            "answer1": "太勤劳是不懂得生活的表现",
            "answer2": "节俭不符合扩大内需政策的要求",
            "answer3": "节俭是个人品质，与预防腐败也有内在关系",
            "answer4": "艰苦创业精神应提倡，勤俭之风不宜弘扬",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "33145",
            "course_id": "47",
            "title": "凡圆筒形构件，如圆柱形压力容器、锅炉的锅筒等都需经弯曲加工成型，钢板在卷板机的辊子之间受到弯曲力矩的作用，产生______而弯曲。",
            "type": "2",
            "answer1": "加工硬化",
            "answer2": "弹性变形",
            "answer3": "塑性变形",
            "answer4": "组织变化",
            "answer5": "",
            "content": "",
            "result": "3"
        },
        {
            "answer_id": "33401",
            "course_id": "47",
            "title": "可采用机械方法或化学方法将坡口表面及其两侧______（焊条电弧焊）或20mm（埋弧焊、气体保护焊）范围内污物清理干净。",
            "type": "2",
            "answer1": "30mm",
            "answer2": "40mm",
            "answer3": "10mm",
            "answer4": "5mm",
            "answer5": "",
            "content": "",
            "result": "3"
        },
        {
            "answer_id": "32123",
            "course_id": "47",
            "title": "选择焊接电流时，考虑的因素之一是：______。",
            "type": "2",
            "answer1": "焊接电源种类",
            "answer2": "焊接位置",
            "answer3": "焊件厚度",
            "answer4": "电弧电压",
            "answer5": "",
            "content": "",
            "result": "2"
        },
        {
            "answer_id": "32379",
            "course_id": "47",
            "title": "以化合物形态存在的元素叫做元素的______。",
            "type": "2",
            "answer1": "单态",
            "answer2": "双态",
            "answer3": "游离态",
            "answer4": "化合态",
            "answer5": "",
            "content": "",
            "result": "4"
        },
        {
            "answer_id": "32635",
            "course_id": "47",
            "title": "碳素结构钢的牌号采用屈服点的字母“Q”、屈服点的数值和______、脱氧方式等符号来表示。",
            "type": "2",
            "answer1": "强度等级",
            "answer2": "物理性能",
            "answer3": "化学性能",
            "answer4": "质量等级",
            "answer5": "",
            "content": "",
            "result": "4"
        },
        {
            "answer_id": "32891",
            "course_id": "47",
            "title": "在下图所示电路中，表示串联的电阻是______。",
            "type": "2",
            "answer1": "R1、R2",
            "answer2": "R3、R4",
            "answer3": "R2、R3",
            "answer4": "R1、R4",
            "answer5": "",
            "content": "",
            "result": "4"
        },
        {
            "answer_id": "33147",
            "course_id": "47",
            "title": "常用的射吸式割炬型号有G01-30、G01-300、______。",
            "type": "2",
            "answer1": "G01-500",
            "answer2": "G02-10",
            "answer3": "G01-100",
            "answer4": "G03-30",
            "answer5": "",
            "content": "",
            "result": "3"
        },
        {
            "answer_id": "33403",
            "course_id": "47",
            "title": "使用E5015焊条焊接工件时，优先选用的焊机是______。",
            "type": "2",
            "answer1": "弧焊变压器电源",
            "answer2": "弧焊整流器电源",
            "answer3": "逆变式电弧焊整流器电源",
            "answer4": "平特性的弧焊整流器",
            "answer5": "",
            "content": "",
            "result": "3"
        },
        {
            "answer_id": "32125",
            "course_id": "47",
            "title": "开坡口是为了保证电弧深入______，使根部焊透，以便于清除焊渣，获得较好的焊缝成型。",
            "type": "2",
            "answer1": "焊缝根部",
            "answer2": "焊缝",
            "answer3": "根部",
            "answer4": "母材",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "32381",
            "course_id": "47",
            "title": "焊条电弧焊收弧方法中适用于薄板收弧的方法是______。",
            "type": "2",
            "answer1": "划圈收弧法",
            "answer2": "反复断弧收弧法",
            "answer3": "回焊收弧法",
            "answer4": "以上三种均可",
            "answer5": "",
            "content": "",
            "result": "2"
        },
        {
            "answer_id": "32637",
            "course_id": "47",
            "title": "等离子弧切割是利用高速、高温和高能的等离子气流来加热和熔化被切割材料，并借助内部的或者外部的高速______将熔化材料排开直至等离子气流束穿透背面而形成割口。",
            "type": "2",
            "answer1": "气流或水流",
            "answer2": "气体",
            "answer3": "液体",
            "answer4": "固体颗粒",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "32893",
            "course_id": "47",
            "title": "采取通风措施降低工人呼吸带空气中的烟尘及______，这对保护作业工人的健康是极其重要的。",
            "type": "2",
            "answer1": "空气浓度",
            "answer2": "CO2气浓度",
            "answer3": "有害气体成分",
            "answer4": "有害气体浓度",
            "answer5": "",
            "content": "",
            "result": "4"
        },
        {
            "answer_id": "33149",
            "course_id": "47",
            "title": "焊条电弧焊一般安全操作规程之一是工作完毕离开作业现场时须______，清理好现场，防止留下事故隐患。",
            "type": "2",
            "answer1": "关掉电灯",
            "answer2": "操作人员一齐离开",
            "answer3": "切断气源",
            "answer4": "切断电源",
            "answer5": "",
            "content": "",
            "result": "4"
        },
        {
            "answer_id": "33405",
            "course_id": "47",
            "title": "有关焊条的烘干下列说法不正确的是______。",
            "type": "2",
            "answer1": "材料的烘干温度严格按标准与制造厂商说明书规定进行",
            "answer2": "不同烘干温度的焊条可以同炉烘焙",
            "answer3": "焊条烘干时，不应成垛或成捆的堆放，应铺成层状",
            "answer4": "焊条烘干的目的主要是为了去除焊条中的水分",
            "answer5": "",
            "content": "",
            "result": "2"
        },
        {
            "answer_id": "32127",
            "course_id": "47",
            "title": "焊缝补充符号“＜”是表示______符号。",
            "type": "2",
            "answer1": "V型坡口",
            "answer2": "单面V型坡口",
            "answer3": "两面焊缝",
            "answer4": "尾部",
            "answer5": "",
            "content": "",
            "result": "4"
        },
        {
            "answer_id": "32383",
            "course_id": "47",
            "title": "低合金耐蚀钢除对一般的力学性能有要求外，对______还有特殊要求。",
            "type": "2",
            "answer1": "耐腐蚀性",
            "answer2": "抗氧化性",
            "answer3": "导电性",
            "answer4": "热强度",
            "answer5": "",
            "content": "",
            "result": "2"
        },
        {
            "answer_id": "32639",
            "course_id": "47",
            "title": "气割垂直固定的管子时，待割透时，调整割嘴与切割点处切线的夹角为后倾______。",
            "type": "2",
            "answer1": "5～10°",
            "answer2": "10～15°",
            "answer3": "20～25°",
            "answer4": "25～30°",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "32895",
            "course_id": "47",
            "title": "常用的射吸式割炬型号G01-300的割嘴形式为______和环形。",
            "type": "2",
            "answer1": "梅花形",
            "answer2": "花型",
            "answer3": "筒形",
            "answer4": "针形",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "33151",
            "course_id": "47",
            "title": "定位焊所使用的焊条及对焊工操作技术要求：______。",
            "type": "2",
            "answer1": "对焊条没有什么要求，但对焊工操作技术要求与正式焊缝一样",
            "answer2": "应与正式焊缝焊接完全一样的",
            "answer3": "对焊条应要求应与正式焊缝一样的，但对焊工操作技术要求比较低",
            "answer4": "定位焊操作比较简单，对焊条及焊工操作技术没有什么要求",
            "answer5": "",
            "content": "",
            "result": "2"
        },
        {
            "answer_id": "33407",
            "course_id": "47",
            "title": "以下有关创新的说法不正确的是______。",
            "type": "2",
            "answer1": "创新是个人事业获得成功的重要因素",
            "answer2": "创新是企事业持续、健康发展的巨大动力",
            "answer3": "创新是企事业竞争取胜的重要手段",
            "answer4": "创新对个人发展无关紧要",
            "answer5": "",
            "content": "",
            "result": "4"
        },
        {
            "answer_id": "32129",
            "course_id": "47",
            "title": "材料验收的主要内容包括材料的______、批号、型号、化学成分和金属力学性能。",
            "type": "2",
            "answer1": "检验机构",
            "answer2": "抗拉强度",
            "answer3": "炉号",
            "answer4": "生产厂家",
            "answer5": "",
            "content": "",
            "result": "3"
        },
        {
            "answer_id": "32385",
            "course_id": "47",
            "title": "库房内地面有水，但相对湿度在60%以上，这样的库房可以储存焊条吗？______。",
            "type": "2",
            "answer1": "可以",
            "answer2": "还行",
            "answer3": "可以，但不宜放时间太长",
            "answer4": "不可以",
            "answer5": "",
            "content": "",
            "result": "4"
        },
        {
            "answer_id": "32641",
            "course_id": "47",
            "title": "不论哪种型钢，其切断方式无非有直截和______。",
            "type": "2",
            "answer1": "斜截",
            "answer2": "横截",
            "answer3": "竖截",
            "answer4": "割截",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "32897",
            "course_id": "47",
            "title": "下列选项中，______不是焊条药皮的组成物。",
            "type": "2",
            "answer1": "稳弧剂",
            "answer2": "造气剂",
            "answer3": "造渣剂",
            "answer4": "增韧剂",
            "answer5": "",
            "content": "",
            "result": "4"
        },
        {
            "answer_id": "33153",
            "course_id": "47",
            "title": "氩气瓶外表涂成银灰色并注有______“氩”字标志字样。",
            "type": "2",
            "answer1": "铝白色",
            "answer2": "银灰色",
            "answer3": "黑色",
            "answer4": "深绿色",
            "answer5": "",
            "content": "",
            "result": "4"
        },
        {
            "answer_id": "33409",
            "course_id": "47",
            "title": "焊接作业个人防护措施重点是切实做好施焊作业场所的通风排尘及搞好焊工的______。",
            "type": "2",
            "answer1": "持证上岗",
            "answer2": "个人卫生",
            "answer3": "个人防护",
            "answer4": "岗前培训",
            "answer5": "",
            "content": "",
            "result": "3"
        },
        {
            "answer_id": "32131",
            "course_id": "47",
            "title": "进行等离子弧焊接操作时，当焊接熔池达到离焊件端部______时，应按停止按钮结束焊接。",
            "type": "2",
            "answer1": "3mm",
            "answer2": "4mm",
            "answer3": "5mm",
            "answer4": "6mm",
            "answer5": "",
            "content": "",
            "result": "3"
        },
        {
            "answer_id": "32387",
            "course_id": "47",
            "title": "焊接结构刚性越大，板厚越大，引起的焊接变形______。",
            "type": "2",
            "answer1": "越大",
            "answer2": "越小",
            "answer3": "不变",
            "answer4": "不确定",
            "answer5": "",
            "content": "",
            "result": "2"
        },
        {
            "answer_id": "32643",
            "course_id": "47",
            "title": "电焊机的技术标准规定，焊条电弧焊电源的额定负载持续率为______。",
            "type": "2",
            "answer1": "0.3",
            "answer2": "0.5",
            "answer3": "0.6",
            "answer4": "0.7",
            "answer5": "",
            "content": "",
            "result": "3"
        },
        {
            "answer_id": "32899",
            "course_id": "47",
            "title": "下列裂纹种类中不属于冷裂纹的是______。",
            "type": "2",
            "answer1": "焊趾裂纹",
            "answer2": "焊道下裂纹",
            "answer3": "再热裂纹",
            "answer4": "根部裂纹",
            "answer5": "",
            "content": "",
            "result": "3"
        },
        {
            "answer_id": "33155",
            "course_id": "47",
            "title": "焊条电弧焊钢板对接横焊打底焊时，可采用连弧焊或______。",
            "type": "2",
            "answer1": "断续焊",
            "answer2": "断弧焊",
            "answer3": "长弧焊",
            "answer4": "往复焊",
            "answer5": "",
            "content": "",
            "result": "2"
        },
        {
            "answer_id": "33411",
            "course_id": "47",
            "title": "等离子切割速度主要决定于材质板厚、切割电流、切割电压、______，喷嘴结构和合适的后拖量等。",
            "type": "2",
            "answer1": "气体种类及流量",
            "answer2": "气路",
            "answer3": "水路",
            "answer4": "电路",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "32133",
            "course_id": "47",
            "title": "等离子切割最常用的气体为______、氮气、氮氩混合气体、氮氢混合气体、氩氢混合气体等。",
            "type": "2",
            "answer1": "氩气",
            "answer2": "氧气",
            "answer3": "乙炔",
            "answer4": "丙烷",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "32389",
            "course_id": "47",
            "title": "焊接接头可分为对接接头、T形接头、角接接头、搭接接头、______。",
            "type": "2",
            "answer1": "横向接头",
            "answer2": "纵向接头",
            "answer3": "端接接头",
            "answer4": "环缝接头",
            "answer5": "",
            "content": "",
            "result": "3"
        },
        {
            "answer_id": "32645",
            "course_id": "47",
            "title": "中华人民共和国劳动法是调整______以及与劳动关系密切联系的社会关系的法律规范。",
            "type": "2",
            "answer1": "债务关系",
            "answer2": "民事纠纷",
            "answer3": "行政诉讼",
            "answer4": "劳动关系",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "32901",
            "course_id": "47",
            "title": "将金属加热到一定温度，并保持一定时间，然后以一定的冷却速度冷却到室温的过程称为______。",
            "type": "2",
            "answer1": "淬火",
            "answer2": "调质处理",
            "answer3": "退火",
            "answer4": "热处理",
            "answer5": "",
            "content": "",
            "result": "2"
        },
        {
            "answer_id": "33157",
            "course_id": "47",
            "title": "热处理是指将金属加热到一定温度，并保持一定时间，然后以一定的冷却速度冷却到______的过程。",
            "type": "2",
            "answer1": "一定温度",
            "answer2": "A3线以下",
            "answer3": "A1线以下",
            "answer4": "室温",
            "answer5": "",
            "content": "",
            "result": "4"
        },
        {
            "answer_id": "33413",
            "course_id": "47",
            "title": "常用的热处理方法有淬火、回火、退火、______四种。",
            "type": "2",
            "answer1": "调质",
            "answer2": "正火",
            "answer3": "低温回火",
            "answer4": "球化",
            "answer5": "",
            "content": "",
            "result": "2"
        },
        {
            "answer_id": "32135",
            "course_id": "47",
            "title": "水再压缩等离子弧切割的高压高速水流在割枪中，一方面对喷嘴起冷却作用，一方面对电弧起______作用。",
            "type": "2",
            "answer1": "压缩",
            "answer2": "预热",
            "answer3": "固定",
            "answer4": "湿润",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "32391",
            "course_id": "47",
            "title": "进行焊接工作时，要求每个焊工作业面积不小于______。",
            "type": "2",
            "answer1": "3m2",
            "answer2": "4m2",
            "answer3": "5m2",
            "answer4": "6m2",
            "answer5": "",
            "content": "",
            "result": "2"
        },
        {
            "answer_id": "32647",
            "course_id": "47",
            "title": "焊条库房要保持一定的湿度和温度，建议温度在______，相对湿度在60%以下。",
            "type": "2",
            "answer1": "0～5℃",
            "answer2": "5～10℃",
            "answer3": "10～25℃",
            "answer4": "30～50℃",
            "answer5": "",
            "content": "",
            "result": "3"
        },
        {
            "answer_id": "32903",
            "course_id": "47",
            "title": "内无裂纹、未焊透、未熔合和条状夹渣的焊缝为______。",
            "type": "2",
            "answer1": "Ⅰ级焊缝",
            "answer2": "Ⅱ级焊缝",
            "answer3": "Ⅲ级焊缝",
            "answer4": "Ⅳ级焊缝",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "33159",
            "course_id": "47",
            "title": "焊条电弧焊收弧方法中适用于厚板收弧的方法是______。",
            "type": "2",
            "answer1": "划圈收弧法",
            "answer2": "反复断弧收弧法",
            "answer3": "回焊收弧法",
            "answer4": "以上三种均可",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "33415",
            "course_id": "47",
            "title": "在铁碳平衡状态图中，Acm线是指______。",
            "type": "2",
            "answer1": "ACD线",
            "answer2": "GS线",
            "answer3": "ES线",
            "answer4": "PSK线",
            "answer5": "",
            "content": "",
            "result": "3"
        },
        {
            "answer_id": "32137",
            "course_id": "47",
            "title": "焊丝H08Mn2Si",
            "type": "2",
            "answer1": "表示含Mn量为0.08％",
            "answer2": "表示含Si量为0.8％",
            "answer3": "表示含Mn量为0.8％",
            "answer4": "表示含C量为0.08％",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "32393",
            "course_id": "47",
            "title": "当焊件刚性较小时，利用外加刚性拘束来减小焊件焊后变形的方法称为______。",
            "type": "2",
            "answer1": "刚性固定法",
            "answer2": "反变形法",
            "answer3": "机械矫正法",
            "answer4": "手工矫正法",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "32649",
            "course_id": "47",
            "title": "表示焊缝横截面形状所用的焊缝符号是______。",
            "type": "2",
            "answer1": "辅助符号",
            "answer2": "基本符号",
            "answer3": "补充符号",
            "answer4": "焊缝尺寸符号",
            "answer5": "",
            "content": "",
            "result": "2"
        },
        {
            "answer_id": "32905",
            "course_id": "47",
            "title": "常用的氧气减压器型号有______、DQ-2AT、DQ-50等。",
            "type": "2",
            "answer1": "DQ-1",
            "answer2": "DQ-10",
            "answer3": "DQ-100",
            "answer4": "OQ-1",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "33161",
            "course_id": "47",
            "title": "抗拉强度的表示符号是______。",
            "type": "2",
            "answer1": "σs",
            "answer2": "σ0.2",
            "answer3": "σk",
            "answer4": "σb",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "33417",
            "course_id": "47",
            "title": "下列运条方法中不作横向摆动是：______。",
            "type": "2",
            "answer1": "直线形运条方法",
            "answer2": "锯齿形运条方法",
            "answer3": "月牙形运条方法",
            "answer4": "三角形运条方法",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "32139",
            "course_id": "47",
            "title": "焊接工艺规程一般包括______、接头编号、焊接材料汇总表和接头焊接工艺卡。",
            "type": "2",
            "answer1": "焊工代号",
            "answer2": "封面",
            "answer3": "焊接地点",
            "answer4": "焊接时间",
            "answer5": "",
            "content": "",
            "result": "3"
        },
        {
            "answer_id": "32395",
            "course_id": "47",
            "title": "为了保证根部焊透，焊接20mm厚的工件______。",
            "type": "2",
            "answer1": "不用留间隙",
            "answer2": "应留有合适的根部间隙",
            "answer3": "可随意",
            "answer4": "必须留大于8mm的根部间隙",
            "answer5": "",
            "content": "",
            "result": "2"
        },
        {
            "answer_id": "32651",
            "course_id": "47",
            "title": "氧-乙炔焰切割大厚度钢板时，易造成切口底部______，影响气割的顺利进行。",
            "type": "2",
            "answer1": "熔渣堵塞",
            "answer2": "过热",
            "answer3": "熔化",
            "answer4": "熔融",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "32907",
            "course_id": "47",
            "title": "碱性焊条在深坡口内焊接，______不好。",
            "type": "2",
            "answer1": "脱氧性",
            "answer2": "保护",
            "answer3": "脱渣性",
            "answer4": "焊缝成型",
            "answer5": "",
            "content": "",
            "result": "3"
        },
        {
            "answer_id": "33163",
            "course_id": "47",
            "title": "焊接重要工件，必须使用碱性焊条，则应选择电弧焊______电源。",
            "type": "2",
            "answer1": "具有下降外特性变压器",
            "answer2": "具有平外特性整流器",
            "answer3": "具有下降外特性整流器",
            "answer4": "具有平外特性变压器",
            "answer5": "",
            "content": "",
            "result": "3"
        },
        {
            "answer_id": "33419",
            "course_id": "47",
            "title": "构件厚度方向和长度方向不在一个平面上的焊接变形称为______。",
            "type": "2",
            "answer1": "弯曲变形",
            "answer2": "波浪变形",
            "answer3": "角变形",
            "answer4": "错边变形",
            "answer5": "",
            "content": "",
            "result": "4"
        },
        {
            "answer_id": "32141",
            "course_id": "47",
            "title": "将某些合金钢在正火后再进行高温回火的连续热处理工艺称为______。",
            "type": "2",
            "answer1": "去应力退火",
            "answer2": "扩散退火",
            "answer3": "调质处理",
            "answer4": "球化退火",
            "answer5": "",
            "content": "",
            "result": "3"
        },
        {
            "answer_id": "32397",
            "course_id": "47",
            "title": "焊剂F308L-H00Cr21Ni10中“308”表示______。",
            "type": "2",
            "answer1": "熔敷金属种类代号",
            "answer2": "焊剂牌号编号",
            "answer3": "熔敷金属抗拉强度最小值",
            "answer4": "试件热处理状态",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "32653",
            "course_id": "47",
            "title": "碳弧气刨时，______，防止铁水及熔渣烧损工作服及烫伤皮肤。",
            "type": "2",
            "answer1": "尽量可能逆风操作",
            "answer2": "尽量可能顺风操作",
            "answer3": "尽量可侧风操作",
            "answer4": "只要不是顺风操作就行",
            "answer5": "",
            "content": "",
            "result": "2"
        },
        {
            "answer_id": "32909",
            "course_id": "47",
            "title": "激光切割方法有激光气化切割、激光熔化切割、______和划片与控制断裂。",
            "type": "2",
            "answer1": "激光氧气切割",
            "answer2": "激光压力切割",
            "answer3": "激光水流切割",
            "answer4": "激光液体切割",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "33165",
            "course_id": "47",
            "title": "企业文化以人为管理主体，以企业精神的共识为核心，以______为基础，以形成最佳的管理机制为目的，是一种特殊的管理哲学。",
            "type": "2",
            "answer1": "个人行为",
            "answer2": "组织关系",
            "answer3": "生产活动",
            "answer4": "群体的行为",
            "answer5": "",
            "content": "",
            "result": "4"
        },
        {
            "answer_id": "33421",
            "course_id": "47",
            "title": "激光产生的物理过程有粒子数反转、受激辐射、光放大、______、光输出。",
            "type": "2",
            "answer1": "振荡",
            "answer2": "受激吸收",
            "answer3": "自发辐射",
            "answer4": "辐射跃迁",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "32143",
            "course_id": "47",
            "title": "激光切割时，透镜焦距可根据______选择，对于较厚板，应选用焦距的透镜。",
            "type": "2",
            "answer1": "材质",
            "answer2": "板厚",
            "answer3": "工件长度",
            "answer4": "工件直线度",
            "answer5": "",
            "content": "",
            "result": "2"
        },
        {
            "answer_id": "32399",
            "course_id": "47",
            "title": "双线图是表示管道和管件______的投影图。",
            "type": "2",
            "answer1": "外轮廓线",
            "answer2": "内轮廓线",
            "answer3": "整体外形",
            "answer4": "局部形状",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "32655",
            "course_id": "47",
            "title": "道德是由一定社会的______决定的，并为一定的社会经济基础服务。",
            "type": "2",
            "answer1": "经济基础",
            "answer2": "物质基础",
            "answer3": "生产关系",
            "answer4": "劳动工具",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "32911",
            "course_id": "47",
            "title": "焊条电弧焊中将焊条与焊件表面垂直地接触，当焊条的末端与函件表面轻轻一碰，便迅速地提起焊条引燃电弧的方法称为______。",
            "type": "2",
            "answer1": "接触引弧法",
            "answer2": "非接触引弧法",
            "answer3": "直击引弧法",
            "answer4": "划擦引弧法",
            "answer5": "",
            "content": "",
            "result": "3"
        },
        {
            "answer_id": "33167",
            "course_id": "47",
            "title": "无心冷弯的优点是没有心棒，弯管时管内不用涂油，简化了工序，提高了劳动生产率；______；内壁不会有机械磨损，质量较高；为弯管的机械化、自动化创造了条件。",
            "type": "2",
            "answer1": "可弯制180°的弯头",
            "answer2": "投资小、成本低",
            "answer3": "设备简单",
            "answer4": "管壁减薄量少",
            "answer5": "",
            "content": "",
            "result": "4"
        },
        {
            "answer_id": "32145",
            "course_id": "47",
            "title": "下列______不是金属材料力学性能的指标。",
            "type": "2",
            "answer1": "强度",
            "answer2": "塑性",
            "answer3": "硬度",
            "answer4": "磁性",
            "answer5": "",
            "content": "",
            "result": "4"
        },
        {
            "answer_id": "32401",
            "course_id": "47",
            "title": "专用焊接软电缆是用______并外包橡胶绝缘。",
            "type": "2",
            "answer1": "多股紫铜细丝制成导线",
            "answer2": "多股黄铜细丝制成导线",
            "answer3": "多股细纲丝制成导线",
            "answer4": "单股紫铜丝制成导线",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "32657",
            "course_id": "47",
            "title": "合同的特征之一是合同是双方的______行为。",
            "type": "2",
            "answer1": "协议",
            "answer2": "法律",
            "answer3": "合作",
            "answer4": "信任",
            "answer5": "",
            "content": "",
            "result": "2"
        },
        {
            "answer_id": "32913",
            "course_id": "47",
            "title": "在焊剂牌号SJ101中第一个“1”表示______。",
            "type": "2",
            "answer1": "熔炼焊剂",
            "answer2": "熔渣渣系类型为氟碱型",
            "answer3": "熔敷金属种类代号",
            "answer4": "烧结焊剂",
            "answer5": "",
            "content": "",
            "result": "2"
        },
        {
            "answer_id": "33169",
            "course_id": "47",
            "title": "等离子切割气体流量过大，从电弧中带走过多的热量，降低了______，不利于电弧稳定。",
            "type": "2",
            "answer1": "切割能力",
            "answer2": "切割电流",
            "answer3": "工作功率",
            "answer4": "工作频率",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "32147",
            "course_id": "47",
            "title": "下列裂纹种类中属于冷裂纹的是______。",
            "type": "2",
            "answer1": "再热裂纹",
            "answer2": "延迟裂纹",
            "answer3": "结晶裂纹",
            "answer4": "焊道下裂纹",
            "answer5": "",
            "content": "",
            "result": "4"
        },
        {
            "answer_id": "32403",
            "course_id": "47",
            "title": "无心冷弯可广泛应用于弯制______的各种直径的管子。",
            "type": "2",
            "answer1": "φ15～φ80mm",
            "answer2": "φ32～φ108mm",
            "answer3": "φ20～φ100mm",
            "answer4": "φ45～φ160mm",
            "answer5": "",
            "content": "",
            "result": "2"
        },
        {
            "answer_id": "32659",
            "course_id": "47",
            "title": "在机械制图中，主视图是物体在投影面上的______。",
            "type": "2",
            "answer1": "仰视投影",
            "answer2": "水平投影",
            "answer3": "侧面投影",
            "answer4": "正面投影",
            "answer5": "",
            "content": "",
            "result": "4"
        },
        {
            "answer_id": "32915",
            "course_id": "47",
            "title": "下列焊接材料中不属于烧结焊剂的是______。",
            "type": "2",
            "answer1": "SJ301",
            "answer2": "SJ101",
            "answer3": "HJ431",
            "answer4": "SJ401",
            "answer5": "",
            "content": "",
            "result": "3"
        },
        {
            "answer_id": "33171",
            "course_id": "47",
            "title": "垂直固定管打底焊换焊条时，在距离前端焊缝收尾处后约______mm处引弧。",
            "type": "2",
            "answer1": "15",
            "answer2": "12",
            "answer3": "10",
            "answer4": "20",
            "answer5": "",
            "content": "",
            "result": "3"
        },
        {
            "answer_id": "32149",
            "course_id": "47",
            "title": "激光切割方法有激光气化切割、激光熔化切割、激光氧气切割和______。",
            "type": "2",
            "answer1": "划片与控制断裂",
            "answer2": "激光压力切割",
            "answer3": "激光水流切割",
            "answer4": "激光液体切割",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "32405",
            "course_id": "47",
            "title": "对接接头平焊位置的焊缝余高差不得超过______。",
            "type": "2",
            "answer1": "3mm",
            "answer2": "4mm",
            "answer3": "5mm",
            "answer4": "6mm",
            "answer5": "",
            "content": "",
            "result": "3"
        },
        {
            "answer_id": "32661",
            "course_id": "47",
            "title": "下列说法中，不符合从业人员开拓创新要求的是______。",
            "type": "2",
            "answer1": "坚定的信心和顽强的意志",
            "answer2": "先天生理因素",
            "answer3": "思维训练",
            "answer4": "标新立异",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "32917",
            "course_id": "47",
            "title": "焊条电弧焊中使用的涂有药皮的______称为焊条。",
            "type": "2",
            "answer1": "电极",
            "answer2": "熔化电极",
            "answer3": "导电棒",
            "answer4": "导电体",
            "answer5": "",
            "content": "",
            "result": "2"
        },
        {
            "answer_id": "33173",
            "course_id": "47",
            "title": "超声波是指频率超过______的机械波。",
            "type": "2",
            "answer1": "20000Hz",
            "answer2": "2000Hz",
            "answer3": "10000Hz",
            "answer4": "30000Hz",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "32151",
            "course_id": "47",
            "title": "乙炔瓶在温度升高时，丙酮的溶解乙炔的能力______，使气瓶内压升高，严重时引起气瓶爆炸。",
            "type": "2",
            "answer1": "下降",
            "answer2": "升高",
            "answer3": "失效",
            "answer4": "加强",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "32407",
            "course_id": "47",
            "title": "回火可以使钢在保持一定硬度的基础上提高钢的______。",
            "type": "2",
            "answer1": "耐腐蚀性",
            "answer2": "强度",
            "answer3": "韧性",
            "answer4": "耐磨性",
            "answer5": "",
            "content": "",
            "result": "3"
        },
        {
            "answer_id": "32663",
            "course_id": "47",
            "title": "焊接工作区域的车辆通道宽度不小于______，人行通道不小于1.5m。",
            "type": "2",
            "answer1": "1m",
            "answer2": "3m",
            "answer3": "2m",
            "answer4": "4m",
            "answer5": "",
            "content": "",
            "result": "2"
        },
        {
            "answer_id": "32919",
            "course_id": "47",
            "title": "硅弧焊整流器电源由三相降压变压器、______、硅整流器组、输出电抗器等组成。",
            "type": "2",
            "answer1": "逆变器",
            "answer2": "饱和电抗器",
            "answer3": "低压整流器",
            "answer4": "全波整流器",
            "answer5": "",
            "content": "",
            "result": "2"
        },
        {
            "answer_id": "33175",
            "course_id": "47",
            "title": "常见的剖视图中没有______。",
            "type": "2",
            "answer1": "全剖视图",
            "answer2": "半剖视图",
            "answer3": "线剖视图",
            "answer4": "局部剖视图",
            "answer5": "",
            "content": "",
            "result": "3"
        },
        {
            "answer_id": "32153",
            "course_id": "47",
            "title": "焊条若偏心，焊接时焊条药皮熔化速度不同，无法形成正常的______，产生电弧的偏吹，使电弧不稳定，造成母材溶化不均匀，影响焊接质量。",
            "type": "2",
            "answer1": "保护",
            "answer2": "电弧",
            "answer3": "套筒",
            "answer4": "电流",
            "answer5": "",
            "content": "",
            "result": "3"
        },
        {
            "answer_id": "32409",
            "course_id": "47",
            "title": "CO2是活性气体，具有较强的氧化性，因此CO2焊所用的焊丝必须含有较高的______等脱氧元素。",
            "type": "2",
            "answer1": "Ni、Cr",
            "answer2": "Mn、Mo",
            "answer3": "Mn、Si",
            "answer4": "Cr、Mo",
            "answer5": "",
            "content": "",
            "result": "3"
        },
        {
            "answer_id": "32665",
            "course_id": "47",
            "title": "带有电荷的原子（或原子团）叫做______。",
            "type": "2",
            "answer1": "分子",
            "answer2": "离子",
            "answer3": "电子",
            "answer4": "质子",
            "answer5": "",
            "content": "",
            "result": "2"
        },
        {
            "answer_id": "32921",
            "course_id": "47",
            "title": "激光切割时，要求______的输出光束为基模。",
            "type": "2",
            "answer1": "激光器",
            "answer2": "聚焦系统",
            "answer3": "光束偏转系统",
            "answer4": "光束检测器",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "33177",
            "course_id": "47",
            "title": "焊接是一种应用极为广泛的______连接方法。",
            "type": "2",
            "answer1": "非永久性",
            "answer2": "固定",
            "answer3": "永久性",
            "answer4": "牢固",
            "answer5": "",
            "content": "",
            "result": "3"
        },
        {
            "answer_id": "32155",
            "course_id": "47",
            "title": "酸性焊条药皮氧化性强，使合金元素烧损较多，焊缝金属含硫量和扩散氢含量较高所以______不好。",
            "type": "2",
            "answer1": "抗裂性",
            "answer2": "工艺性",
            "answer3": "脱渣性",
            "answer4": "电弧稳定性",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "32411",
            "course_id": "47",
            "title": "焊接通风是通过通风系统向车间送入新鲜空气，或将作业区内的______，从而改善作业环境，保护工人健康。",
            "type": "2",
            "answer1": "有害气体分解",
            "answer2": "有害气体排出",
            "answer3": "CO2气排出",
            "answer4": "有害气体变成无害",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "32667",
            "course_id": "47",
            "title": "三相交流电路是指由______为电源与负载连接组成的电路。",
            "type": "2",
            "answer1": "一相电势",
            "answer2": "二相电势",
            "answer3": "三相电势",
            "answer4": "四相电势",
            "answer5": "",
            "content": "",
            "result": "3"
        },
        {
            "answer_id": "32923",
            "course_id": "47",
            "title": "关于弧焊整流器下面说法不正确的是______。",
            "type": "2",
            "answer1": "弧焊整流器是一种将直流电经变压、整流转换成交流电的焊接电源",
            "answer2": "采用硅整流器作为整流元件的称为硅弧焊整流器",
            "answer3": "采用晶闸管整流的称为晶闸管整流弧焊机",
            "answer4": "采用硅整流器作为整流元件的称为硅整流焊机",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "33179",
            "course_id": "47",
            "title": "气割法兰时，下述______步骤正确。",
            "type": "2",
            "answer1": "1、将钢板下面垫空垫牢，在圆心位置打样冲眼2、用划规在钢板上划出法兰的内圆和外圆；3、切割外圆；4、切割内圆",
            "answer2": "1、用划规在钢板上划出法兰的内圆和外圆2、将钢板下面垫空垫牢，在圆心位置打样冲眼；3、切割外圆；4、切割内圆",
            "answer3": "1、用划规在钢板上划出法兰的内圆和外圆2、将钢板下面垫空垫牢，在圆心位置打样冲眼；3、切割内圆；4、切割外圆",
            "answer4": "1、将钢板下面垫空垫牢，在圆心位置打样冲眼2、用划规在钢板上划出法兰的内圆和外圆；3、切割内圆；4、切割外圆",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "32157",
            "course_id": "47",
            "title": "碳钢药芯焊丝E501T-1ML中的“T”表示______。",
            "type": "2",
            "answer1": "焊接位置为全位置焊接",
            "answer2": "药芯焊丝",
            "answer3": "焊接电源种类",
            "answer4": "保护气体为75％～80％Ar+CO2",
            "answer5": "",
            "content": "",
            "result": "2"
        },
        {
            "answer_id": "32413",
            "course_id": "47",
            "title": "对电源没有接地中线的低压电网中的用电器，将用电器的______用导体线作接地连接以保护人身安全，叫保护接地。",
            "type": "2",
            "answer1": "输入端",
            "answer2": "内部",
            "answer3": "外壳",
            "answer4": "铁芯",
            "answer5": "",
            "content": "",
            "result": "3"
        },
        {
            "answer_id": "32669",
            "course_id": "47",
            "title": "根据GB/T221—2000规定，合金结构钢牌号中，合金元素质量分数的平均值______时，牌号中仅标明合金元素符号，一般不标明含量。",
            "type": "2",
            "answer1": "<0.15%",
            "answer2": "<0.5%",
            "answer3": "<5%",
            "answer4": "<1.5%",
            "answer5": "",
            "content": "",
            "result": "4"
        },
        {
            "answer_id": "32925",
            "course_id": "47",
            "title": "在碳钢埋弧焊焊剂F4A2-H08A中“4”表示______。",
            "type": "2",
            "answer1": "热处理状态",
            "answer2": "熔敷金属抗拉强度的最小值",
            "answer3": "焊接位置",
            "answer4": "熔敷金属化学成分代号",
            "answer5": "",
            "content": "",
            "result": "2"
        },
        {
            "answer_id": "33181",
            "course_id": "47",
            "title": "质量管理包括______和质量控制两方面的内容。",
            "type": "2",
            "answer1": "质量评价",
            "answer2": "质量改进",
            "answer3": "质量保证",
            "answer4": "质量实现",
            "answer5": "",
            "content": "",
            "result": "4"
        },
        {
            "answer_id": "32159",
            "course_id": "47",
            "title": "RZCH焊丝中的H表示______。",
            "type": "2",
            "answer1": "熔敷金属的力学性能高",
            "answer2": "熔敷金属中含碳高",
            "answer3": "熔敷金属类型为铸铁",
            "answer4": "熔敷金属中含有合金元素",
            "answer5": "",
            "content": "",
            "result": "4"
        },
        {
            "answer_id": "32415",
            "course_id": "47",
            "title": "氧-乙炔广泛应用于______。",
            "type": "2",
            "answer1": "气割有色金属",
            "answer2": "钢板下料，开坡口和铸件浇冒口的切割",
            "answer3": "气割不锈钢",
            "answer4": "气割铜及铜合金",
            "answer5": "",
            "content": "",
            "result": "2"
        },
        {
            "answer_id": "32671",
            "course_id": "47",
            "title": "焊接从业人员在工作中应该______，团结合作，主动配合工作。",
            "type": "2",
            "answer1": "谦虚谨慎",
            "answer2": "独立学习",
            "answer3": "注重质量",
            "answer4": "忠于职守",
            "answer5": "",
            "content": "",
            "result": "3"
        },
        {
            "answer_id": "32927",
            "course_id": "47",
            "title": "钢材矫正的基本原理是使材料产生______，使材料的纤维长短一致，从而达到矫正的目的。",
            "type": "2",
            "answer1": "不变形",
            "answer2": "较小变形",
            "answer3": "较大变形",
            "answer4": "新的变形",
            "answer5": "",
            "content": "",
            "result": "4"
        },
        {
            "answer_id": "33183",
            "course_id": "47",
            "title": "用锤子敲击錾子对金属进行切削加工的方法叫做______。",
            "type": "2",
            "answer1": "錾削",
            "answer2": "锯削",
            "answer3": "锉削",
            "answer4": "划线",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "32161",
            "course_id": "47",
            "title": "压焊的另一种形式是不加热，在被焊金属的接触面上施加足够大的压力，借助于压力所引起的______，以使原子间相互接近而获得牢固的压挤接头。",
            "type": "2",
            "answer1": "塑性变形",
            "answer2": "局部熔化",
            "answer3": "升温",
            "answer4": "变形",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "32417",
            "course_id": "47",
            "title": "投影线从投影中心发出，交于一点的投影法称为______。",
            "type": "2",
            "answer1": "中心投影法",
            "answer2": "垂直投影法",
            "answer3": "平行投影法",
            "answer4": "正投影法",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "32673",
            "course_id": "47",
            "title": "下列裂纹种类中属于热裂纹的是______。",
            "type": "2",
            "answer1": "再热裂纹",
            "answer2": "延迟裂纹",
            "answer3": "结晶裂纹",
            "answer4": "以上都是",
            "answer5": "",
            "content": "",
            "result": "3"
        },
        {
            "answer_id": "32929",
            "course_id": "47",
            "title": "从事职业活动的人要自觉遵守和职业活动、行为有关的______。",
            "type": "2",
            "answer1": "制度和纪律",
            "answer2": "任务和计划",
            "answer3": "企业发展规划",
            "answer4": "企业分派的工作",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "33185",
            "course_id": "47",
            "title": "完成气割的应是______，而不是______。",
            "type": "2",
            "answer1": "氧气火焰",
            "answer2": "火焰氧气",
            "answer3": "乙炔氧气",
            "answer4": "氧气乙炔",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "32163",
            "course_id": "47",
            "title": "CO2气体保护焊安全操作规程之一，由于金属飞溅引起火灾的危险性比其它焊接方法大，必须采取______。",
            "type": "2",
            "answer1": "防风措施",
            "answer2": "防护措施",
            "answer3": "防火措施",
            "answer4": "绝缘措施",
            "answer5": "",
            "content": "",
            "result": "3"
        },
        {
            "answer_id": "32419",
            "course_id": "47",
            "title": "焊接人员在封闭环境中作业时应特别注意______。",
            "type": "2",
            "answer1": "焊机是否接好",
            "answer2": "紫外线",
            "answer3": "通风系统是否畅通",
            "answer4": "噪声",
            "answer5": "",
            "content": "",
            "result": "3"
        },
        {
            "answer_id": "32675",
            "course_id": "47",
            "title": "下列焊条中采用牌号表示的是______。",
            "type": "2",
            "answer1": "E4303",
            "answer2": "E5015-G",
            "answer3": "J507R",
            "answer4": "E1100",
            "answer5": "",
            "content": "",
            "result": "3"
        },
        {
            "answer_id": "32931",
            "course_id": "47",
            "title": "金属材料受拉力作用被破断以后，在标距内总伸长长度同原来的标距长度相比的百分数叫做______。",
            "type": "2",
            "answer1": "伸长率",
            "answer2": "冷弯角",
            "answer3": "断面收缩率",
            "answer4": "冲击韧度",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "33187",
            "course_id": "47",
            "title": "哪些不属于对焊条电弧焊电源的要求______。",
            "type": "2",
            "answer1": "良好的调节特性",
            "answer2": "具有陡降的外特性",
            "answer3": "良好的工艺性能",
            "answer4": "具有适当的空载电压",
            "answer5": "",
            "content": "",
            "result": "3"
        },
        {
            "answer_id": "32165",
            "course_id": "47",
            "title": "对接接头平焊位置的焊缝余高不得超过______。",
            "type": "2",
            "answer1": "3mm",
            "answer2": "4mm",
            "answer3": "5mm",
            "answer4": "6mm",
            "answer5": "",
            "content": "",
            "result": "2"
        },
        {
            "answer_id": "32421",
            "course_id": "47",
            "title": "常见的剖视图有全剖视图、半剖视图和______。",
            "type": "2",
            "answer1": "点剖视图",
            "answer2": "线剖视图",
            "answer3": "面剖视图",
            "answer4": "局部剖视图",
            "answer5": "",
            "content": "",
            "result": "4"
        },
        {
            "answer_id": "32677",
            "course_id": "47",
            "title": "激光切割的特点是切割质量好、切割效率高、激光切割是无接触切割、______。",
            "type": "2",
            "answer1": "可切割多种材料",
            "answer2": "焦点唯一",
            "answer3": "光谱宽度宽",
            "answer4": "热源集中",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "32933",
            "course_id": "47",
            "title": "对激光切割质量有影响的工艺参数有______。",
            "type": "2",
            "answer1": "光斑模式，激光波长、",
            "answer2": "激光输出功率、辅助气体及压力、切割速度、光程",
            "answer3": "光斑模式、光程",
            "answer4": "光斑模式、切割速度、光程",
            "answer5": "",
            "content": "",
            "result": "2"
        },
        {
            "answer_id": "33189",
            "course_id": "47",
            "title": "测量电流时只能使用______。",
            "type": "2",
            "answer1": "安培表",
            "answer2": "电度表",
            "answer3": "电压表",
            "answer4": "欧姆表",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "32167",
            "course_id": "47",
            "title": "下列型号的焊丝中属于镍及镍合金焊丝的是______。",
            "type": "2",
            "answer1": "ERNiCu-7",
            "answer2": "HS331",
            "answer3": "E5015",
            "answer4": "A132",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "32423",
            "course_id": "47",
            "title": "将钢加热到A3或A1左右一定温度，保温后，缓慢（一般随炉冷却）而均匀冷却的热处理方法称为______。",
            "type": "2",
            "answer1": "淬火",
            "answer2": "退火",
            "answer3": "回火",
            "answer4": "正火",
            "answer5": "",
            "content": "",
            "result": "2"
        },
        {
            "answer_id": "32679",
            "course_id": "47",
            "title": "下列焊条型号中属于堆焊焊条的是______。",
            "type": "2",
            "answer1": "E4303",
            "answer2": "E5015",
            "answer3": "EDPMn2-03",
            "answer4": "ENiCu-7",
            "answer5": "",
            "content": "",
            "result": "3"
        },
        {
            "answer_id": "32935",
            "course_id": "47",
            "title": "电弧电压的高低主要取决______。",
            "type": "2",
            "answer1": "电弧长度",
            "answer2": "空载电压",
            "answer3": "焊接电源种类",
            "answer4": "电源动特性",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "33191",
            "course_id": "47",
            "title": "动铁式弧焊变压器，当活动铁心向外移动时，______。",
            "type": "2",
            "answer1": "漏磁减少,电流增加",
            "answer2": "漏磁减少,电流减少",
            "answer3": "漏磁增加,电流增加",
            "answer4": "漏磁不变,电流不变",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "32169",
            "course_id": "47",
            "title": "焊缝通过外观检查______。",
            "type": "2",
            "answer1": "可以明确判断出焊缝内部的气孔数量",
            "answer2": "可推断出焊缝内部的质量状况",
            "answer3": "可以明确判断出焊缝内部的裂纹长短",
            "answer4": "可以明确判断出焊缝内部的夹渣形状",
            "answer5": "",
            "content": "",
            "result": "2"
        },
        {
            "answer_id": "32425",
            "course_id": "47",
            "title": "骑座式管板仰焊位盖面焊采用多道焊时由于运条动作小，熔池小，可有效防止______等缺陷。",
            "type": "2",
            "answer1": "未熔合、咬边",
            "answer2": "未熔合、烧穿",
            "answer3": "未熔合、塌陷",
            "answer4": "未熔合、未焊透",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "32681",
            "course_id": "47",
            "title": "下列焊接试验中能够测定金属屈服点的是______。",
            "type": "2",
            "answer1": "弯曲试验",
            "answer2": "冲击试验",
            "answer3": "硬度试验",
            "answer4": "拉伸试验",
            "answer5": "",
            "content": "",
            "result": "4"
        },
        {
            "answer_id": "32937",
            "course_id": "47",
            "title": "《特种设备作业人员证》持证人员应当在复审期满______前，向发证部门提出复审申请。",
            "type": "2",
            "answer1": "一个月",
            "answer2": "两个月",
            "answer3": "三个月",
            "answer4": "四个月",
            "answer5": "",
            "content": "",
            "result": "3"
        },
        {
            "answer_id": "33193",
            "course_id": "47",
            "title": "碳素钢是指碳的质量分数小于______的铁碳合金。",
            "type": "2",
            "answer1": "0.0211",
            "answer2": "0.0669",
            "answer3": "0.043",
            "answer4": "0.006",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "32171",
            "course_id": "47",
            "title": "受激光直接照射，会由于激光的______引起烧伤，可瞬间使人致盲。",
            "type": "2",
            "answer1": "功率效应",
            "answer2": "加热效应",
            "answer3": "亮度效应",
            "answer4": "频谱效应",
            "answer5": "",
            "content": "",
            "result": "2"
        },
        {
            "answer_id": "32427",
            "course_id": "47",
            "title": "原子呈散乱分布，至多有些局部的短程规则排列的属于______。",
            "type": "2",
            "answer1": "晶体",
            "answer2": "单晶体",
            "answer3": "多晶体",
            "answer4": "非晶体",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "32683",
            "course_id": "47",
            "title": "药皮在焊接中形成喇叭状套筒，使电弧热量集中，可减少飞溅，有利于熔滴向熔池过渡，提高了______。",
            "type": "2",
            "answer1": "工作效率",
            "answer2": "焊接效率",
            "answer3": "电流强度",
            "answer4": "熔敷系数",
            "answer5": "",
            "content": "",
            "result": "4"
        },
        {
            "answer_id": "32939",
            "course_id": "47",
            "title": "割嘴结构有梅花形（整体式）和______两种。",
            "type": "2",
            "answer1": "筒形",
            "answer2": "花形",
            "answer3": "环形（组合式）",
            "answer4": "针形",
            "answer5": "",
            "content": "",
            "result": "2"
        },
        {
            "answer_id": "33195",
            "course_id": "47",
            "title": "含碳量为0.8%的铁碳合金在1000℃时的存在形式是______。",
            "type": "2",
            "answer1": "赖氏体",
            "answer2": "珠光体",
            "answer3": "奥氏体",
            "answer4": "马氏体",
            "answer5": "",
            "content": "",
            "result": "2"
        },
        {
            "answer_id": "32173",
            "course_id": "47",
            "title": "焊接工艺评定是通过焊接试件、检验试样、考察焊接接头性能是否符合产品的技术条件，以评定______是否合格。",
            "type": "2",
            "answer1": "所拟定的焊接工艺",
            "answer2": "焊工技术水平",
            "answer3": "焊接试件",
            "answer4": "焊接材料",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "32429",
            "course_id": "47",
            "title": "铜及铜合金焊丝牌号中，元素符号后面的数字表示______，并用短划“－”与前面的元素符号分开。",
            "type": "2",
            "answer1": "不同的合金含量",
            "answer2": "不同的用途",
            "answer3": "不同的组织",
            "answer4": "不同的品种",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "32685",
            "course_id": "47",
            "title": "在锯条的选择中，当锯削较软的材料时应选用______。",
            "type": "2",
            "answer1": "细齿锯条",
            "answer2": "粗齿锯条",
            "answer3": "宽齿锯条",
            "answer4": "窄齿锯条",
            "answer5": "",
            "content": "",
            "result": "2"
        },
        {
            "answer_id": "32941",
            "course_id": "47",
            "title": "中华人民共和国合同法颁布于______年。",
            "type": "2",
            "answer1": "1994",
            "answer2": "1996",
            "answer3": "1998",
            "answer4": "1999",
            "answer5": "",
            "content": "",
            "result": "4"
        },
        {
            "answer_id": "33197",
            "course_id": "47",
            "title": "激光可切割不锈钢，______、省料、省工，用于飞机零件、直升机旋翼等的制造。",
            "type": "2",
            "answer1": "无变形",
            "answer2": "无裂纹",
            "answer3": "无局部热应力",
            "answer4": "无应力",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "32175",
            "course_id": "47",
            "title": "钎焊是利用某些熔点低于母材熔点的金属材料作______，将焊件和钎料加热到高于钎料熔点，但低于母材熔点的温度，利用液态钎料润湿母材，填充接头间隙并与母材相互扩散实现连接的。",
            "type": "2",
            "answer1": "辅助材料",
            "answer2": "焊接材料",
            "answer3": "钎料",
            "answer4": "填充材料",
            "answer5": "",
            "content": "",
            "result": "3"
        },
        {
            "answer_id": "32431",
            "course_id": "47",
            "title": "下列焊条型号中属于铜及铜合金焊条的是______。",
            "type": "2",
            "answer1": "EZNiCu-1",
            "answer2": "EDPMn2-03",
            "answer3": "E5015",
            "answer4": "ECuMnAlNi-B",
            "answer5": "",
            "content": "",
            "result": "4"
        },
        {
            "answer_id": "32687",
            "course_id": "47",
            "title": "在铁碳平衡状态图中，低碳钢室温下的组织是______。",
            "type": "2",
            "answer1": "珠光体+铁素体",
            "answer2": "珠光体+奥氏体",
            "answer3": "铁素体+奥氏体",
            "answer4": "珠光体+马氏体",
            "answer5": "",
            "content": "",
            "result": "4"
        },
        {
            "answer_id": "32943",
            "course_id": "47",
            "title": "职业道德是______的重要组成部分。",
            "type": "2",
            "answer1": "社会主义企业建设",
            "answer2": "社会主义道德体系",
            "answer3": "社会主义法律法规",
            "answer4": "社会主义伦理建设",
            "answer5": "",
            "content": "",
            "result": "2"
        },
        {
            "answer_id": "33199",
            "course_id": "47",
            "title": "下列______具有不透明、有光泽、有延展性等特性。",
            "type": "2",
            "answer1": "钨",
            "answer2": "碳",
            "answer3": "硫",
            "answer4": "磷",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "32177",
            "course_id": "47",
            "title": "压焊的另一种形式是不加热，在被焊金属的______施加足够大的压力，借助于压力所引起的塑性变形，以使原子间相互接近而获得牢固的压挤接头。",
            "type": "2",
            "answer1": "表面上",
            "answer2": "两侧",
            "answer3": "接触面上",
            "answer4": "一端",
            "answer5": "",
            "content": "",
            "result": "3"
        },
        {
            "answer_id": "32433",
            "course_id": "47",
            "title": "企业在市场经济中赖以生存的重要依据是______。",
            "type": "2",
            "answer1": "质量",
            "answer2": "服务",
            "answer3": "价格",
            "answer4": "信誉",
            "answer5": "",
            "content": "",
            "result": "4"
        },
        {
            "answer_id": "32689",
            "course_id": "47",
            "title": "表示焊缝的某些特征而采用的符号是焊缝______符号。",
            "type": "2",
            "answer1": "尺寸",
            "answer2": "补充",
            "answer3": "形状",
            "answer4": "表面形状特征",
            "answer5": "",
            "content": "",
            "result": "2"
        },
        {
            "answer_id": "32945",
            "course_id": "47",
            "title": "空气等离子弧切割工艺参数包括工件厚度、喷嘴孔径、空载电压、切割电压、______、压缩空气流量、切割速度等。",
            "type": "2",
            "answer1": "切割电流",
            "answer2": "喷嘴长度",
            "answer3": "喷嘴大小",
            "answer4": "喷嘴数量",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "33201",
            "course_id": "47",
            "title": "数字化弧焊逆变电源是一种采用______以0或1的方式完成对弧焊工艺过程的闭环控制的逆变式弧焊电源。",
            "type": "2",
            "answer1": "集成电路技术",
            "answer2": "晶体管技术",
            "answer3": "计算机技术",
            "answer4": "光电技术",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "32179",
            "course_id": "47",
            "title": "焊接从业人员应刻苦钻研业务，认真学习专业知识，重视______，努力提高劳动者素质。",
            "type": "2",
            "answer1": "岗位技能训练",
            "answer2": "人际交往",
            "answer3": "管理素质提高",
            "answer4": "焊接质量",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "32435",
            "course_id": "47",
            "title": "下列说法正确的是：______。",
            "type": "2",
            "answer1": "对同一厚度的材料，其他条件不变时，焊接层数增加，焊缝的夹渣倾向增加",
            "answer2": "对同一厚度的材料，其他条件不变时，焊接层数增加，焊缝热裂纹倾向增加",
            "answer3": "对同一厚度的材料，其他条件不变时，焊接层数增加，提高了焊接接头的塑性和韧性",
            "answer4": "对同一厚度的材料，其他条件不变时，焊接层数增加，降低了焊接接头的塑性和韧性",
            "answer5": "",
            "content": "",
            "result": "3"
        },
        {
            "answer_id": "32691",
            "course_id": "47",
            "title": "下列______是氧的元素符号。",
            "type": "2",
            "answer1": "O",
            "answer2": "N",
            "answer3": "C",
            "answer4": "H",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "32947",
            "course_id": "47",
            "title": "等离子切割气体流量大，利于______，使等离子弧的能量更为集中，提高了工作电压。",
            "type": "2",
            "answer1": "压缩电弧",
            "answer2": "释放电流",
            "answer3": "降低电压",
            "answer4": "提升电压",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "33203",
            "course_id": "47",
            "title": "下面有关企业文化的描述不正确的是______。",
            "type": "2",
            "answer1": "企业文化就是指企业的管理方式",
            "answer2": "企业文化包括企业的经营观念、企业精神、价值观念、行为准则、道德规范、企业形象以及全体员工对企业的责任感、荣誉感等",
            "answer3": "企业文化是一种综合性的个体文化，是一种“硬管理”与“软约束”的有机统一",
            "answer4": "企业文化是组织成员相互沟通的机制",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "32181",
            "course_id": "47",
            "title": "氧气瓶应定期进行检验，一般______年一次。",
            "type": "2",
            "answer1": "三",
            "answer2": "两",
            "answer3": "一",
            "answer4": "五",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "32437",
            "course_id": "47",
            "title": "有关焊条的发放下列说法不正确的是______。",
            "type": "2",
            "answer1": "钢材应严格按照生产计划提出的材料规格与数量发放",
            "answer2": "剩余焊条需退回库中时，只需交给仓库即可",
            "answer3": "焊条的发放手续应严格执行，必须按产品工艺规定的型号、规格、数量发放",
            "answer4": "焊条退回库中时，必须在确认焊条的型号、规格后方可收回",
            "answer5": "",
            "content": "",
            "result": "2"
        },
        {
            "answer_id": "32693",
            "course_id": "47",
            "title": "等离子切割时，在______内缩量一定时，喷嘴距离工件的高度一般在6～8mm。",
            "type": "2",
            "answer1": "电极",
            "answer2": "割嘴",
            "answer3": "割枪",
            "answer4": "气路",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "32949",
            "course_id": "47",
            "title": "下列______不是焊接接头中产生夹渣缺陷的原因。",
            "type": "2",
            "answer1": "焊件边缘及焊层、焊道之间清理不干净",
            "answer2": "焊接电流太小，焊接速度过快",
            "answer3": "钢材的淬硬倾向较大",
            "answer4": "焊条角度和运条方法不对",
            "answer5": "",
            "content": "",
            "result": "3"
        },
        {
            "answer_id": "33205",
            "course_id": "47",
            "title": "开坡口能起到调节基本金属与______的比例作用。",
            "type": "2",
            "answer1": "附件",
            "answer2": "辅助材料",
            "answer3": "焊条",
            "answer4": "填充金属",
            "answer5": "",
            "content": "",
            "result": "4"
        },
        {
            "answer_id": "32183",
            "course_id": "47",
            "title": "元素是指具有相同______的同一类原子的总称。",
            "type": "2",
            "answer1": "中子数",
            "answer2": "核电荷数",
            "answer3": "最外层电子数",
            "answer4": "相对原子质量",
            "answer5": "",
            "content": "",
            "result": "3"
        },
        {
            "answer_id": "32439",
            "course_id": "47",
            "title": "动铁式弧焊变压器电流的细调节是通过______。",
            "type": "2",
            "answer1": "通过改变一次线圈匝数来实现",
            "answer2": "通过改变二次线圈匝数来实现",
            "answer3": "通过改变一次线圈、二次线圈匝数来实现",
            "answer4": "调节活动铁心与固定铁心的相对位置来实现的",
            "answer5": "",
            "content": "",
            "result": "4"
        },
        {
            "answer_id": "32695",
            "course_id": "47",
            "title": "对激光切割质量有影响的被切割材料的物理特性有______。",
            "type": "2",
            "answer1": "材料厚度、材质等",
            "answer2": "激光输出功率、辅助气体及压力、切割速度、光程",
            "answer3": "光斑模式、光程",
            "answer4": "光斑模式、切割速度、光程",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "32951",
            "course_id": "47",
            "title": "钢材的冷作硬化区的存在将会成为导致______的重要因素之一。",
            "type": "2",
            "answer1": "强度下降",
            "answer2": "影响硬度",
            "answer3": "脆性断裂",
            "answer4": "韧性上升",
            "answer5": "",
            "content": "",
            "result": "3"
        },
        {
            "answer_id": "33207",
            "course_id": "47",
            "title": "骑座式管板仰焊位盖面焊采用单道焊时不具备______特点。",
            "type": "2",
            "answer1": "外观平整、成型好",
            "answer2": "可有效防止产生未熔合",
            "answer3": "对操作稳定性要求较高",
            "answer4": "焊缝表面易下垂",
            "answer5": "",
            "content": "",
            "result": "2"
        },
        {
            "answer_id": "32185",
            "course_id": "47",
            "title": "根部间隙是为了保证根部______。",
            "type": "2",
            "answer1": "不能烧穿",
            "answer2": "能烧穿",
            "answer3": "能够焊透",
            "answer4": "不能焊透",
            "answer5": "",
            "content": "",
            "result": "3"
        },
        {
            "answer_id": "32441",
            "course_id": "47",
            "title": "下列元素中为金属元素的是______。",
            "type": "2",
            "answer1": "镍",
            "answer2": "磷",
            "answer3": "硫",
            "answer4": "氧",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "32697",
            "course_id": "47",
            "title": "焊条若偏心，焊接时焊条药皮溶化速度不同，无法形成正常的套筒，产生电弧的______，使电弧不稳定，造成母材溶化不均匀，影响焊接质量。",
            "type": "2",
            "answer1": "偏离",
            "answer2": "偏心",
            "answer3": "电压低",
            "answer4": "偏吹",
            "answer5": "",
            "content": "",
            "result": "4"
        },
        {
            "answer_id": "32953",
            "course_id": "47",
            "title": "下列属于非晶体的是______。",
            "type": "2",
            "answer1": "钨",
            "answer2": "碳",
            "answer3": "玻璃",
            "answer4": "磷",
            "answer5": "",
            "content": "",
            "result": "3"
        },
        {
            "answer_id": "33209",
            "course_id": "47",
            "title": "下列关于职业道德是事业成功的保证的说法中，不正确的是______。",
            "type": "2",
            "answer1": "没有职业道德的人干不好任何事情",
            "answer2": "职业道德是人事业成功的重要条件",
            "answer3": "事业的成功与职业道德没有关系",
            "answer4": "每一个成功的人往往都有较高的职业道德",
            "answer5": "",
            "content": "",
            "result": "3"
        },
        {
            "answer_id": "32187",
            "course_id": "47",
            "title": "钎焊是利用某些熔点低于母材熔点的金属材料作钎料，将焊件和钎料加热到高于钎料熔点，但低于母材熔点的温度，利用液态钎料润湿母材，填充接头间隙并与母材______实现连接的。",
            "type": "2",
            "answer1": "相互连接",
            "answer2": "相互扩散",
            "answer3": "熔化",
            "answer4": "接触",
            "answer5": "",
            "content": "",
            "result": "2"
        },
        {
            "answer_id": "32443",
            "course_id": "47",
            "title": "流行的质量管理方法有全面质量管理、六西格玛和______。",
            "type": "2",
            "answer1": "总体质量管理",
            "answer2": "渐进质量管理",
            "answer3": "分段质量管理",
            "answer4": "QC七大手法",
            "answer5": "",
            "content": "",
            "result": "2"
        },
        {
            "answer_id": "32699",
            "course_id": "47",
            "title": "激光焊设备主要包括激光器、光学偏转聚焦系统、______、工作台（或专用焊机）和控制系统。",
            "type": "2",
            "answer1": "光束检测器",
            "answer2": "显微镜",
            "answer3": "谐振腔",
            "answer4": "电容放电器",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "32955",
            "course_id": "47",
            "title": "金属在______下随温度的变化，由一种晶格转变为另一种晶格的现象称为同素异晶转变。",
            "type": "2",
            "answer1": "固态",
            "answer2": "液态",
            "answer3": "气态",
            "answer4": "以上均可",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "33211",
            "course_id": "47",
            "title": "材料在外力作用下抵抗变形和断裂的能力称为______。",
            "type": "2",
            "answer1": "硬度",
            "answer2": "强度",
            "answer3": "塑性",
            "answer4": "韧性",
            "answer5": "",
            "content": "",
            "result": "2"
        },
        {
            "answer_id": "32189",
            "course_id": "47",
            "title": "焊缝尺寸符号是表示______和焊缝各特征尺寸的符号。",
            "type": "2",
            "answer1": "间隙",
            "answer2": "坡口面",
            "answer3": "钝边",
            "answer4": "坡口",
            "answer5": "",
            "content": "",
            "result": "4"
        },
        {
            "answer_id": "32445",
            "course_id": "47",
            "title": "按照生产工艺可以将焊剂分为熔炼焊剂、______和粘结焊剂。",
            "type": "2",
            "answer1": "烧结焊剂",
            "answer2": "中性焊剂",
            "answer3": "活性焊剂",
            "answer4": "高锰焊剂",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "32701",
            "course_id": "47",
            "title": "激光产生的物理过程有粒子数反转、受激辐射、______、振荡、光输出。",
            "type": "2",
            "answer1": "光放大",
            "answer2": "受激吸收",
            "answer3": "自发辐射",
            "answer4": "辐射跃迁",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "32957",
            "course_id": "47",
            "title": "下列焊丝中，______是紫铜丝。",
            "type": "2",
            "answer1": "HSCuZn－1",
            "answer2": "HSCuZnNi",
            "answer3": "HSCuSn",
            "answer4": "HSCu",
            "answer5": "",
            "content": "",
            "result": "4"
        },
        {
            "answer_id": "33213",
            "course_id": "47",
            "title": "______可表示坡口和根部间隙的尺寸。",
            "type": "2",
            "answer1": "焊缝尺寸符号",
            "answer2": "焊缝辅助符号",
            "answer3": "焊缝补充符号",
            "answer4": "焊缝基本符合",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "32191",
            "course_id": "47",
            "title": "气割用的乙炔气胶管内径为______。",
            "type": "2",
            "answer1": "10mm",
            "answer2": "11mm",
            "answer3": "12mm",
            "answer4": "8mm",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "32447",
            "course_id": "47",
            "title": "等离子弧切割不是依靠______反应，而是靠熔化来切割材料。",
            "type": "2",
            "answer1": "氧化",
            "answer2": "还原",
            "answer3": "酸性",
            "answer4": "碱性",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "32703",
            "course_id": "47",
            "title": "对于强度级别交底的钢材，基本上是按等强度原则，但对于焊接结构刚性大，受力情况复杂的工件，选用焊条时应考虑焊缝的______。",
            "type": "2",
            "answer1": "韧性",
            "answer2": "强度",
            "answer3": "硬度",
            "answer4": "塑性",
            "answer5": "",
            "content": "",
            "result": "4"
        },
        {
            "answer_id": "32959",
            "course_id": "47",
            "title": "硅弧焊整流器电源由三相降压变压器、饱和电抗器、______、输出电抗器等组成。",
            "type": "2",
            "answer1": "硅整流器组",
            "answer2": "逆变器",
            "answer3": "低压整流器",
            "answer4": "全波整流器",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "33215",
            "course_id": "47",
            "title": "焊接即通过______，或两者并用，并且用或不用填充材料，使工件达到结合的一种加工工艺方法。",
            "type": "2",
            "answer1": "加热或加压",
            "answer2": "加热",
            "answer3": "加压",
            "answer4": "溶化",
            "answer5": "",
            "content": "",
            "result": "3"
        },
        {
            "answer_id": "32193",
            "course_id": "47",
            "title": "气割时，切口断面形状差主要有几种现象：切口过宽、上缘棱角被熔化或熔塌、切口中部凹心大和______。",
            "type": "2",
            "answer1": "厚板切口下部呈喇叭状",
            "answer2": "曲线切口偏离切割线",
            "answer3": "切口熔化",
            "answer4": "切割面不良",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "32449",
            "course_id": "47",
            "title": "等离子切割电源电流等级越大，选用的切割电源空载电压就越______。",
            "type": "2",
            "answer1": "低",
            "answer2": "高",
            "answer3": "平均",
            "answer4": "无变化",
            "answer5": "",
            "content": "",
            "result": "2"
        },
        {
            "answer_id": "32705",
            "course_id": "47",
            "title": "激光器按照激光工作物质状态可分为：______和气体激光器。",
            "type": "2",
            "answer1": "液体激光器",
            "answer2": "固体激光器",
            "answer3": "等离子激光器",
            "answer4": "电容放电激光器",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "32961",
            "course_id": "47",
            "title": "在碳钢埋弧焊焊剂F5121-H08MnMoA中“F”表示______。",
            "type": "2",
            "answer1": "热处理状态",
            "answer2": "焊丝",
            "answer3": "焊剂",
            "answer4": "熔敷金属化学成分代号",
            "answer5": "",
            "content": "",
            "result": "3"
        },
        {
            "answer_id": "33217",
            "course_id": "47",
            "title": "用交流电压表直接测量时，电压表应并联在被测电路上，扩大交流电压表量程应配用______。",
            "type": "2",
            "answer1": "电流互感器",
            "answer2": "分流器",
            "answer3": "电抗器",
            "answer4": "电压互感器",
            "answer5": "",
            "content": "",
            "result": "4"
        },
        {
            "answer_id": "32195",
            "course_id": "47",
            "title": "激光切割时，不同的切割机采用不同形状的______。",
            "type": "2",
            "answer1": "进气管",
            "answer2": "胶管",
            "answer3": "喷嘴",
            "answer4": "材料",
            "answer5": "",
            "content": "",
            "result": "3"
        },
        {
            "answer_id": "32451",
            "course_id": "47",
            "title": "根据GB/T221—2000规定，合金结构钢牌号头部用两位阿拉伯数字表示碳的质量分数的平均值______表示。",
            "type": "2",
            "answer1": "以百分之几计",
            "answer2": "以千分之几计",
            "answer3": "以万分之几计",
            "answer4": "以十万分之几计",
            "answer5": "",
            "content": "",
            "result": "3"
        },
        {
            "answer_id": "32707",
            "course_id": "47",
            "title": "焊接接头常温拉伸试验的合格标准是焊接接头的抗拉强度不低于母材抗拉强度的______。",
            "type": "2",
            "answer1": "上限",
            "answer2": "下限",
            "answer3": "实测值",
            "answer4": "平均值",
            "answer5": "",
            "content": "",
            "result": "2"
        },
        {
            "answer_id": "32963",
            "course_id": "47",
            "title": "常用的射吸式割炬型号有______、G01-300、G01-100。",
            "type": "2",
            "answer1": "G01-500",
            "answer2": "G02-10",
            "answer3": "G01-30",
            "answer4": "G03-30",
            "answer5": "",
            "content": "",
            "result": "3"
        },
        {
            "answer_id": "33219",
            "course_id": "47",
            "title": "同主族元素随原子序数增加从上而下，原子半径逐渐增大，金属性逐渐增强，非金属性______。",
            "type": "2",
            "answer1": "逐渐减弱",
            "answer2": "逐渐增强",
            "answer3": "没有变化",
            "answer4": "不确定",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "32197",
            "course_id": "47",
            "title": "Ⅲ级焊缝表面内凹不允许超过______。",
            "type": "2",
            "answer1": "1mm",
            "answer2": "1.5mm",
            "answer3": "2mm",
            "answer4": "2.5mm",
            "answer5": "",
            "content": "",
            "result": "4"
        },
        {
            "answer_id": "32453",
            "course_id": "47",
            "title": "等离子切割主要应防电击、防电弧光辐射、防灰尘与烟气、防噪声、______等。",
            "type": "2",
            "answer1": "放高频",
            "answer2": "氧气",
            "answer3": "乙炔",
            "answer4": "丙烷",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "32709",
            "course_id": "47",
            "title": "激光器现场只允许______的工作人员对激光器进行操作和进行激光加工。",
            "type": "2",
            "answer1": "有经验",
            "answer2": "有激情",
            "answer3": "有热情",
            "answer4": "有想法",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "32965",
            "course_id": "47",
            "title": "高温回火后得到的组织是______。",
            "type": "2",
            "answer1": "回火马氏体",
            "answer2": "回火托氏体",
            "answer3": "回火索氏体",
            "answer4": "马氏体",
            "answer5": "",
            "content": "",
            "result": "3"
        },
        {
            "answer_id": "33221",
            "course_id": "47",
            "title": "酸性焊条因对工件上的铁锈、油等污物不敏感，焊接时产生的______少。",
            "type": "2",
            "answer1": "熔敷金属",
            "answer2": "熔渣",
            "answer3": "有害气体",
            "answer4": "气体",
            "answer5": "",
            "content": "",
            "result": "3"
        },
        {
            "answer_id": "32199",
            "course_id": "47",
            "title": "焊缝射线探伤可以显示出缺陷的种类、______，并可作永久记录。",
            "type": "2",
            "answer1": "位置和形状",
            "answer2": "形状和大小",
            "answer3": "位置和大小",
            "answer4": "位置",
            "answer5": "",
            "content": "",
            "result": "2"
        },
        {
            "answer_id": "32455",
            "course_id": "47",
            "title": "下列现象中那些是因焊接速度过慢所引起的______。",
            "type": "2",
            "answer1": "未焊透",
            "answer2": "焊接飞溅",
            "answer3": "未熔合",
            "answer4": "热影响区宽度增加",
            "answer5": "",
            "content": "",
            "result": "4"
        },
        {
            "answer_id": "32711",
            "course_id": "47",
            "title": "焊工所遵守的______不属于与焊工职业活动行为有关的制度和纪律。",
            "type": "2",
            "answer1": "安全操作规程",
            "answer2": "道德规范",
            "answer3": "企业有关规章制度",
            "answer4": "劳动纪律",
            "answer5": "",
            "content": "",
            "result": "2"
        },
        {
            "answer_id": "32967",
            "course_id": "47",
            "title": "CO2气瓶外表是______，并标有黑色“液态二氧化碳”字样。",
            "type": "2",
            "answer1": "银灰色",
            "answer2": "铝白色",
            "answer3": "天蓝色",
            "answer4": "深绿色",
            "answer5": "",
            "content": "",
            "result": "2"
        },
        {
            "answer_id": "33223",
            "course_id": "47",
            "title": "焊接过程中，由于药皮里的有机物及某些碳酸盐无机物在高温作用下产生大量的中性或还原气体笼罩着电弧区和熔池，防止空气侵入，达到了保护______的目的。",
            "type": "2",
            "answer1": "熔敷金属",
            "answer2": "焊缝",
            "answer3": "焊接接头",
            "answer4": "电弧",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "32201",
            "course_id": "47",
            "title": "不论哪种型钢，其切断方式无非有______和斜截。",
            "type": "2",
            "answer1": "直截",
            "answer2": "横截",
            "answer3": "竖截",
            "answer4": "割截",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "32457",
            "course_id": "47",
            "title": "电弧焊是利用气体导电时产生的______作为热源。",
            "type": "2",
            "answer1": "电流热",
            "answer2": "电弧热",
            "answer3": "电阻热",
            "answer4": "压力",
            "answer5": "",
            "content": "",
            "result": "2"
        },
        {
            "answer_id": "32713",
            "course_id": "47",
            "title": "等离子切割用空气作为工作气体以及高压喷射水作为工作介质时，切割电源的空载电压要______一些。",
            "type": "2",
            "answer1": "低",
            "answer2": "高",
            "answer3": "平均",
            "answer4": "无变化",
            "answer5": "",
            "content": "",
            "result": "2"
        },
        {
            "answer_id": "32969",
            "course_id": "47",
            "title": "职业道德的意义很深远，但是不包含______。",
            "type": "2",
            "answer1": "有利于推动社会主义精神文明建设",
            "answer2": "有利于企业建设和发展",
            "answer3": "有利于企业体制改革",
            "answer4": "有利于个人的提高和发展",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "33225",
            "course_id": "47",
            "title": "激光切割时，透镜焦距可根据板厚选择，对于较厚板，应选用焦距______的透镜。",
            "type": "2",
            "answer1": "较大",
            "answer2": "较小",
            "answer3": "平行",
            "answer4": "垂直",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "32203",
            "course_id": "47",
            "title": "在未适当保护下的眼睛，长期慢性小剂量暴露于红外线，也可能发生调视机能减退，发生早期______。",
            "type": "2",
            "answer1": "白内障",
            "answer2": "近视",
            "answer3": "花眼",
            "answer4": "角膜炎",
            "answer5": "",
            "content": "",
            "result": "3"
        },
        {
            "answer_id": "32459",
            "course_id": "47",
            "title": "根据GB/T221—2000规定,合金结构钢中,合金元素质量分数的平均值为______时，在合金元素符号后应写成2。",
            "type": "2",
            "answer1": "1.5%～2.49%",
            "answer2": "1.5%～2.00%",
            "answer3": "2.00%～2.49%",
            "answer4": "2.49%～3.00%",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "32715",
            "course_id": "47",
            "title": "焊接接头可分为对接接头、T形接头、角接接头、搭接接头______。",
            "type": "2",
            "answer1": "横向接头",
            "answer2": "纵向接头",
            "answer3": "端接接头",
            "answer4": "环缝接头",
            "answer5": "",
            "content": "",
            "result": "3"
        },
        {
            "answer_id": "32971",
            "course_id": "47",
            "title": "等离子弧切割是利用高速、高温和高能的等离子气流来加热和熔化被切割材料，并借助内部的或者外部的高速气流或水流将熔化材料排开直至______穿透背面而形成割口。",
            "type": "2",
            "answer1": "等离子气流束",
            "answer2": "气体",
            "answer3": "液体",
            "answer4": "固体颗粒",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "33227",
            "course_id": "47",
            "title": "钎焊的金属结合机理与熔焊和压焊______。",
            "type": "2",
            "answer1": "相同",
            "answer2": "不同",
            "answer3": "不确定",
            "answer4": "部分相同",
            "answer5": "",
            "content": "",
            "result": "2"
        },
        {
            "answer_id": "32205",
            "course_id": "47",
            "title": "气割时，直线切口不直的原因有：钢板放置不平、钢板变形、割嘴风线不好、______等。",
            "type": "2",
            "answer1": "操作技术不良",
            "answer2": "切割速度过慢",
            "answer3": "氧气压力过大",
            "answer4": "切割面不良",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "32461",
            "course_id": "47",
            "title": "压焊的另一种形式是不加热，在被焊金属的接触面上施加足够大的压力，借助于压力所引起的塑性变形，以使______相互接近而获得牢固的压挤接头。",
            "type": "2",
            "answer1": "分子间",
            "answer2": "晶格间",
            "answer3": "晶体间",
            "answer4": "原子间",
            "answer5": "",
            "content": "",
            "result": "4"
        },
        {
            "answer_id": "32717",
            "course_id": "47",
            "title": "焊缝偏离结构中性轴越远，则越容易产生______。",
            "type": "2",
            "answer1": "弯曲变形",
            "answer2": "波浪变形",
            "answer3": "角变形",
            "answer4": "扭曲变形",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "32973",
            "course_id": "47",
            "title": "爱岗敬业敬业就是提倡______的精神。",
            "type": "2",
            "answer1": "无私奉献",
            "answer2": "集体利益至上",
            "answer3": "干一行，爱一行",
            "answer4": "公私分明",
            "answer5": "",
            "content": "",
            "result": "3"
        },
        {
            "answer_id": "33229",
            "course_id": "47",
            "title": "酸性焊条的焊缝金属的塑性和韧性______碱性焊条形成的焊缝。",
            "type": "2",
            "answer1": "均高于",
            "answer2": "均低于",
            "answer3": "均等于",
            "answer4": "均好于",
            "answer5": "",
            "content": "",
            "result": "2"
        },
        {
            "answer_id": "32207",
            "course_id": "47",
            "title": "焊缝辅助符号“—”是表示焊缝______符号。",
            "type": "2",
            "answer1": "凹面",
            "answer2": "齐面",
            "answer3": "平面",
            "answer4": "凸面",
            "answer5": "",
            "content": "",
            "result": "3"
        },
        {
            "answer_id": "32463",
            "course_id": "47",
            "title": "等离子切割大厚度板材和采用双原子气体时，空载电压相应要______。",
            "type": "2",
            "answer1": "高",
            "answer2": "低",
            "answer3": "适中",
            "answer4": "平均",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "32719",
            "course_id": "47",
            "title": "对焊条电弧焊电源的要求有：具有______，具有陡降的外特性，具有良好的动特性，具有良好的调节特性。",
            "type": "2",
            "answer1": "适当的空载电压",
            "answer2": "适当的电流",
            "answer3": "适当的电弧电压",
            "answer4": "适当的溶化速度",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "32975",
            "course_id": "47",
            "title": "质量管理包括质量保证和______两方面的内容。",
            "type": "2",
            "answer1": "质量评价",
            "answer2": "质量改进",
            "answer3": "质量控制",
            "answer4": "质量实现",
            "answer5": "",
            "content": "",
            "result": "3"
        },
        {
            "answer_id": "33231",
            "course_id": "47",
            "title": "按焊条的用途分类，下列哪一种不在此范围之内______。",
            "type": "2",
            "answer1": "碱性焊条",
            "answer2": "碳钢焊条",
            "answer3": "不锈钢焊条",
            "answer4": "镍及镍合金焊条",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "32209",
            "course_id": "47",
            "title": "等离子切割时，在电极内缩量一定时，喷嘴距离工件的高度一般在______。",
            "type": "2",
            "answer1": "6～8mm",
            "answer2": "10～12mm",
            "answer3": "12～14mm",
            "answer4": "14～16mm",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "32465",
            "course_id": "47",
            "title": "流行的质量管理方法有______、六西格玛和QC七大手法。",
            "type": "2",
            "answer1": "总体质量管理",
            "answer2": "渐进质量管理",
            "answer3": "分段质量管理",
            "answer4": "全面质量管理",
            "answer5": "",
            "content": "",
            "result": "4"
        },
        {
            "answer_id": "32721",
            "course_id": "47",
            "title": "激光切割时，切割喷嘴是影响切割______的一个重要因素。",
            "type": "2",
            "answer1": "效率和速度",
            "answer2": "质量和数量",
            "answer3": "质量和效率",
            "answer4": "种类",
            "answer5": "",
            "content": "",
            "result": "3"
        },
        {
            "answer_id": "32977",
            "course_id": "47",
            "title": "每个部位的3个试样冲击功的______不应低于母材标准规定的最低值，是常温冲击试验的合格标准。",
            "type": "2",
            "answer1": "最低值",
            "answer2": "算术平均值",
            "answer3": "最高值",
            "answer4": "中间值",
            "answer5": "",
            "content": "",
            "result": "2"
        },
        {
            "answer_id": "33233",
            "course_id": "47",
            "title": "在电路中有两个以上电阻，一个接一个的依次连接，而且流过这些电阻的______相同就叫做电阻的串联。",
            "type": "2",
            "answer1": "电流",
            "answer2": "电压",
            "answer3": "电感",
            "answer4": "不确定",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "32211",
            "course_id": "47",
            "title": "割嘴结构有环形（组合式）和______两种。",
            "type": "2",
            "answer1": "筒形",
            "answer2": "梅花形（整体式）",
            "answer3": "花形",
            "answer4": "针形",
            "answer5": "",
            "content": "",
            "result": "2"
        },
        {
            "answer_id": "32467",
            "course_id": "47",
            "title": "等离子切割最常用的气体为氩气、氮气、氮氩混合气体、______、氩氢混合气体等。",
            "type": "2",
            "answer1": "氮氢混合气体",
            "answer2": "氧气",
            "answer3": "乙炔",
            "answer4": "丙烷",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "32723",
            "course_id": "47",
            "title": "焊接过程中产生的物理有害因素有焊接弧光、______、热辐射、噪声以及放射线等。",
            "type": "2",
            "answer1": "焊接烟尘",
            "answer2": "高频电磁波",
            "answer3": "中频电磁波",
            "answer4": "有害气体",
            "answer5": "",
            "content": "",
            "result": "2"
        },
        {
            "answer_id": "32979",
            "course_id": "47",
            "title": "两焊件端面相对平行的接头叫作______。",
            "type": "2",
            "answer1": "对接接头",
            "answer2": "角接接头",
            "answer3": "端接接头",
            "answer4": "搭接接头",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "33235",
            "course_id": "47",
            "title": "质量管理是指为了实现______，而进行的所有管理性质的活动。",
            "type": "2",
            "answer1": "质量方针",
            "answer2": "质量目标",
            "answer3": "质量改进",
            "answer4": "质量控制",
            "answer5": "",
            "content": "",
            "result": "2"
        },
        {
            "answer_id": "32213",
            "course_id": "47",
            "title": "厚度12mm钢板对接，焊条电弧焊立焊，单面焊双面成形时，预置反变形量一般为______。",
            "type": "2",
            "answer1": "0o",
            "answer2": "1o～2o",
            "answer3": "3o～4o",
            "answer4": "5o～6o",
            "answer5": "",
            "content": "",
            "result": "3"
        },
        {
            "answer_id": "32469",
            "course_id": "47",
            "title": "元素的游离态是指以______形态存在的元素。",
            "type": "2",
            "answer1": "单质",
            "answer2": "化合物",
            "answer3": "原子",
            "answer4": "分子",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "32725",
            "course_id": "47",
            "title": "等离子弧切割方法除______外，派生出的型式有水再压缩等离子弧切割、空气等离子弧切割或水再压缩空气等离子弧切割方法。",
            "type": "2",
            "answer1": "非转移型",
            "answer2": "一般型",
            "answer3": "常用型",
            "answer4": "非联合型",
            "answer5": "",
            "content": "",
            "result": "2"
        },
        {
            "answer_id": "32981",
            "course_id": "47",
            "title": "_____是职业道德的基石。",
            "type": "2",
            "answer1": "企业精神",
            "answer2": "企业文化",
            "answer3": "企业发展",
            "answer4": "企业管理",
            "answer5": "",
            "content": "",
            "result": "2"
        },
        {
            "answer_id": "33237",
            "course_id": "47",
            "title": "碳在α-铁中的过饱和固溶体称为______。",
            "type": "2",
            "answer1": "奥氏体",
            "answer2": "珠光体",
            "answer3": "赖氏体",
            "answer4": "马氏体",
            "answer5": "",
            "content": "",
            "result": "4"
        },
        {
            "answer_id": "32215",
            "course_id": "47",
            "title": "等离子弧切割方法除一般型外，派生出的型式有______切割、空气等离子弧切割或水再压缩空气等离子弧切割方法。",
            "type": "2",
            "answer1": "非转移型",
            "answer2": "水再压缩等离子弧",
            "answer3": "常用型",
            "answer4": "非联合型",
            "answer5": "",
            "content": "",
            "result": "2"
        },
        {
            "answer_id": "32471",
            "course_id": "47",
            "title": "动铁式弧焊变压器电流的粗调节是通过______。",
            "type": "2",
            "answer1": "通过改变一次线圈匝数来实现",
            "answer2": "通过改变二次线圈匝数来实现",
            "answer3": "通过改变一次线圈、二次线圈匝数来实现",
            "answer4": "调节活动铁心与固定铁心的相对位置来实现的",
            "answer5": "",
            "content": "",
            "result": "2"
        },
        {
            "answer_id": "32727",
            "course_id": "47",
            "title": "等离子切割时，在电极______一定时，喷嘴距离工件的高度一般在6～8mm。",
            "type": "2",
            "answer1": "内缩量",
            "answer2": "外展量",
            "answer3": "外缩量",
            "answer4": "直径",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "32983",
            "course_id": "47",
            "title": "激光割炬包括______、氧气进气管、氧气压力表、透镜冷却水套、聚焦透镜、反射镜冷却水套、反射镜、放大控制及驱动电路、位置传感器等。",
            "type": "2",
            "answer1": "激光器",
            "answer2": "聚焦系统",
            "answer3": "切割喷嘴",
            "answer4": "光束检测器",
            "answer5": "",
            "content": "",
            "result": "3"
        },
        {
            "answer_id": "33239",
            "course_id": "47",
            "title": "______与板厚的比值与切割速度呈正比。",
            "type": "2",
            "answer1": "激光平行度",
            "answer2": "激光功率",
            "answer3": "氧气浓度",
            "answer4": "表面粗糙度",
            "answer5": "",
            "content": "",
            "result": "2"
        },
        {
            "answer_id": "32217",
            "course_id": "47",
            "title": "等离子弧金属焊接、切割几乎都是采用______型弧。",
            "type": "2",
            "answer1": "联合",
            "answer2": "常用",
            "answer3": "转移",
            "answer4": "非联合",
            "answer5": "",
            "content": "",
            "result": "3"
        },
        {
            "answer_id": "32473",
            "course_id": "47",
            "title": "在坡口中留钝边是为了______，钝边的尺寸要保证第一层焊缝能焊透。",
            "type": "2",
            "answer1": "防止烧穿",
            "answer2": "能烧穿",
            "answer3": "焊透",
            "answer4": "不焊透",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "32729",
            "course_id": "47",
            "title": "激光焊设备主要包括激光器、______、光束检测器、工作台（或专用焊机）和控制系统。",
            "type": "2",
            "answer1": "光学偏转聚焦系统",
            "answer2": "显微镜",
            "answer3": "谐振腔",
            "answer4": "电容放电器",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "32985",
            "course_id": "47",
            "title": "空气等离子弧切割工艺参数包括工件厚度、喷嘴孔径、空载电压、______、切割电流、压缩空气流量、切割速度等。",
            "type": "2",
            "answer1": "切割电压",
            "answer2": "喷嘴长度",
            "answer3": "喷嘴大小",
            "answer4": "喷嘴数量",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "33241",
            "course_id": "47",
            "title": "碳钢焊条型号中前两位数字表示熔敷金属抗拉强度的______，单位为Mpa",
            "type": "2",
            "answer1": "最大值",
            "answer2": "最小值",
            "answer3": "值",
            "answer4": "差",
            "answer5": "",
            "content": "",
            "result": "2"
        },
        {
            "answer_id": "32219",
            "course_id": "47",
            "title": "气割开坡口开X形坡口时，气割速度应比切割该钢板的速度______等。",
            "type": "2",
            "answer1": "慢",
            "answer2": "快",
            "answer3": "相同",
            "answer4": "时快时慢",
            "answer5": "",
            "content": "",
            "result": "2"
        },
        {
            "answer_id": "32475",
            "course_id": "47",
            "title": "在冲击载荷下，金属材料抵抗______的能力称为冲击韧度。",
            "type": "2",
            "answer1": "破坏",
            "answer2": "变形",
            "answer3": "腐蚀",
            "answer4": "氧化",
            "answer5": "",
            "content": "",
            "result": "3"
        },
        {
            "answer_id": "32731",
            "course_id": "47",
            "title": "下列焊条型号中，______是纯镍铸铁焊条。",
            "type": "2",
            "answer1": "EZCQ",
            "answer2": "EZV",
            "answer3": "EZC",
            "answer4": "EZNi",
            "answer5": "",
            "content": "",
            "result": "4"
        },
        {
            "answer_id": "32987",
            "course_id": "47",
            "title": "法律与道德都是人们的______。",
            "type": "2",
            "answer1": "个人生活准则",
            "answer2": "个人行为准则",
            "answer3": "社会行为规范",
            "answer4": "自我约束力",
            "answer5": "",
            "content": "",
            "result": "3"
        },
        {
            "answer_id": "33243",
            "course_id": "47",
            "title": "钢板在弯曲时，为了不影响其力学性能，通常但D/δ______时必须进行热弯（D为圆筒的直径，δ为钢板厚度）。",
            "type": "2",
            "answer1": "＞40",
            "answer2": "＜40",
            "answer3": "＞60",
            "answer4": "＜60",
            "answer5": "",
            "content": "",
            "result": "3"
        },
        {
            "answer_id": "32221",
            "course_id": "47",
            "title": "胀接是利用管子和管板______来实现密封和紧固的一种连接方法。",
            "type": "2",
            "answer1": "变形",
            "answer2": "卡紧",
            "answer3": "接触",
            "answer4": "夹紧",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "32477",
            "course_id": "47",
            "title": "在机械制图中，物体的水平投影称为______。",
            "type": "2",
            "answer1": "主视图",
            "answer2": "俯视图",
            "answer3": "侧视图",
            "answer4": "仰视图",
            "answer5": "",
            "content": "",
            "result": "2"
        },
        {
            "answer_id": "32733",
            "course_id": "47",
            "title": "根据GB/T1591—94规定，______牌号由代表屈服点的字母“Q”，屈服点数值，质量等级符号三部分按顺序排列。",
            "type": "2",
            "answer1": "碳素结构钢",
            "answer2": "优质碳素结构钢",
            "answer3": "合金结构钢",
            "answer4": "低合金高强度结构钢",
            "answer5": "",
            "content": "",
            "result": "4"
        },
        {
            "answer_id": "32989",
            "course_id": "47",
            "title": "利用力的作用使焊接接头拉伸残余应力区产生塑性变形，从而松弛焊接残余应力的方法称为______。",
            "type": "2",
            "answer1": "热处理法",
            "answer2": "锤击法",
            "answer3": "加载法",
            "answer4": "机械法",
            "answer5": "",
            "content": "",
            "result": "3"
        },
        {
            "answer_id": "33245",
            "course_id": "47",
            "title": "下列现象中那些是因焊接速度过快所引起的______。",
            "type": "2",
            "answer1": "热影响区宽度增加",
            "answer2": "焊接接头的晶粒变粗",
            "answer3": "焊接变形增大",
            "answer4": "未熔合",
            "answer5": "",
            "content": "",
            "result": "4"
        },
        {
            "answer_id": "32223",
            "course_id": "47",
            "title": "下列______属于珠光体耐热钢。",
            "type": "2",
            "answer1": "12AlMoV",
            "answer2": "06MnNb",
            "answer3": "09Mn2V",
            "answer4": "15Cr1MoV",
            "answer5": "",
            "content": "",
            "result": "4"
        },
        {
            "answer_id": "32479",
            "course_id": "47",
            "title": "焊接弧光的______辐射会造成对眼睛的损害，有可能引起白内障。",
            "type": "2",
            "answer1": "可见光",
            "answer2": "红外线",
            "answer3": "紫外线",
            "answer4": "高频",
            "answer5": "",
            "content": "",
            "result": "2"
        },
        {
            "answer_id": "32735",
            "course_id": "47",
            "title": "等离子切割割口质量主要以割口宽度、______、割口表面粗糙度、割纹深度、割口底部熔瘤及割口热影响区硬度和宽度来评定。",
            "type": "2",
            "answer1": "割口垂直度",
            "answer2": "割口长度",
            "answer3": "割口倾斜度",
            "answer4": "割口烧损",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "32991",
            "course_id": "47",
            "title": "利用某些熔点低于母材熔点的金属材料作______，将焊件和钎料加热到高于钎料熔点，但低于母材熔点的温度，利用液态钎料润湿母材，填充接头间隙并与母材相互扩散实现连接焊件的方法，叫做钎焊。",
            "type": "2",
            "answer1": "辅助材料",
            "answer2": "焊接材料",
            "answer3": "钎料",
            "answer4": "填充材料",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "33247",
            "course_id": "47",
            "title": "为了保证根部能够焊透，坡口根部应留有合适的______。",
            "type": "2",
            "answer1": "尺寸",
            "answer2": "边",
            "answer3": "缝隙",
            "answer4": "间隙",
            "answer5": "",
            "content": "",
            "result": "4"
        },
        {
            "answer_id": "32225",
            "course_id": "47",
            "title": "如果焊缝和箭头线不在接头的同一侧，则将焊缝基本符号标在基准线的______。",
            "type": "2",
            "answer1": "实线侧",
            "answer2": "上侧",
            "answer3": "虚线侧",
            "answer4": "同一侧",
            "answer5": "",
            "content": "",
            "result": "3"
        },
        {
            "answer_id": "32481",
            "course_id": "47",
            "title": "气割开坡口开V形坡口时，气割速度应比切割该钢板的速度______等。",
            "type": "2",
            "answer1": "慢",
            "answer2": "快",
            "answer3": "相同",
            "answer4": "时快时慢",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "32737",
            "course_id": "47",
            "title": "切割前应将割口附近______内的铁锈、油污、油漆及尘垢等清除干净。",
            "type": "2",
            "answer1": "30～50mm",
            "answer2": "20～200mm",
            "answer3": "10mm",
            "answer4": "1米",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "32993",
            "course_id": "47",
            "title": "激光可切割钛合金，______、质量好，代替铣削、磨削和化学蚀刻。",
            "type": "2",
            "answer1": "速度快",
            "answer2": "速度适中",
            "answer3": "无局部热应力",
            "answer4": "无应力",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "33249",
            "course_id": "47",
            "title": "高碳钢中,碳质量分数为______。",
            "type": "2",
            "answer1": ">0.90%",
            "answer2": ">0.80%",
            "answer3": ">0.70%",
            "answer4": ">0.60%",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "32227",
            "course_id": "47",
            "title": "小功率的激光由于人眼睛的______作用，也会引起眼底组织的损伤。",
            "type": "2",
            "answer1": "凝视",
            "answer2": "光学聚焦",
            "answer3": "观察",
            "answer4": "频谱",
            "answer5": "",
            "content": "",
            "result": "2"
        },
        {
            "answer_id": "32483",
            "course_id": "47",
            "title": "在锅炉压力容器压力管道焊工考试中代号GTAW代表______。",
            "type": "2",
            "answer1": "钨极气体保护焊",
            "answer2": "熔化极气体保护焊",
            "answer3": "焊条电弧焊",
            "answer4": "埋弧焊",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "32739",
            "course_id": "47",
            "title": "火焰矫正法矫正焊接变形时，其最高温度要严格控制，不宜超过______。",
            "type": "2",
            "answer1": "700℃",
            "answer2": "800℃",
            "answer3": "900℃",
            "answer4": "100℃",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "32995",
            "course_id": "47",
            "title": "常用的焊接方法中手弧焊的焊接方法代号是______。",
            "type": "2",
            "answer1": "111",
            "answer2": "1",
            "answer3": "12",
            "answer4": "22",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "33251",
            "course_id": "47",
            "title": "焊接工艺规程一般包括封面、接头编号、______和接头焊接工艺卡。",
            "type": "2",
            "answer1": "焊接人员",
            "answer2": "焊接时间",
            "answer3": "焊接地点",
            "answer4": "焊接材料汇总表",
            "answer5": "",
            "content": "",
            "result": "4"
        },
        {
            "answer_id": "32229",
            "course_id": "47",
            "title": "常见的剖视图有全剖视图、______和局部剖视图。",
            "type": "2",
            "answer1": "点剖视图",
            "answer2": "线剖视图",
            "answer3": "面剖视图",
            "answer4": "半剖视图",
            "answer5": "",
            "content": "",
            "result": "4"
        },
        {
            "answer_id": "32485",
            "course_id": "47",
            "title": "激光光路如不能全封闭，则光束高度应避开眼、头等重要器官，让激光从人的高度______通过。",
            "type": "2",
            "answer1": "以上",
            "answer2": "以下",
            "answer3": "左右",
            "answer4": "正好",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "32741",
            "course_id": "47",
            "title": "焊后构件两侧钢板离开原来位置向上翘起一个角度，这种变形叫______。",
            "type": "2",
            "answer1": "弯曲变形",
            "answer2": "波浪变形",
            "answer3": "角变形",
            "answer4": "错边变形",
            "answer5": "",
            "content": "",
            "result": "3"
        },
        {
            "answer_id": "32997",
            "course_id": "47",
            "title": "在机械制图中不可见轮廓线应使用______表示。",
            "type": "2",
            "answer1": "粗实线",
            "answer2": "细实线",
            "answer3": "虚线",
            "answer4": "点化线",
            "answer5": "",
            "content": "",
            "result": "3"
        },
        {
            "answer_id": "33253",
            "course_id": "47",
            "title": "补加因素是指影响焊接接头______的焊接工艺因素。",
            "type": "2",
            "answer1": "抗拉强度",
            "answer2": "弯曲性能",
            "answer3": "冲击韧度",
            "answer4": "硬度",
            "answer5": "",
            "content": "",
            "result": "3"
        },
        {
            "answer_id": "32231",
            "course_id": "47",
            "title": "焊条电弧焊中使用的涂有______的熔化电极称为焊条。",
            "type": "2",
            "answer1": "药皮",
            "answer2": "粉末",
            "answer3": "涂料",
            "answer4": "焊剂",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "32487",
            "course_id": "47",
            "title": "在机械制图中，为了便于图纸的绘制、使用和保存，应优先采用______规定的图纸基本幅面。",
            "type": "2",
            "answer1": "国标",
            "answer2": "企业标准",
            "answer3": "厂标",
            "answer4": "行业标准",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "32743",
            "course_id": "47",
            "title": "不能引起气瓶﹙氧气、乙炔、液化气﹚爆炸是：______。",
            "type": "2",
            "answer1": "剧烈颠颠簸",
            "answer2": "阳光下暴晒",
            "answer3": "和油脂类物品放在一起",
            "answer4": "和惰性气体放这一起",
            "answer5": "",
            "content": "",
            "result": "4"
        },
        {
            "answer_id": "32999",
            "course_id": "47",
            "title": "焊条电弧焊钢板对接横焊盖面焊时，采用连弧______。",
            "type": "2",
            "answer1": "往复焊",
            "answer2": "慢速焊",
            "answer3": "多道焊",
            "answer4": "长弧断续焊",
            "answer5": "",
            "content": "",
            "result": "3"
        },
        {
            "answer_id": "33255",
            "course_id": "47",
            "title": "碱性焊条药皮中碱性氧化物比较多，故脱氧、脱硫、脱磷的能力______。",
            "type": "2",
            "answer1": "不如酸性焊条",
            "answer2": "等同于酸性焊条",
            "answer3": "比酸性焊条强",
            "answer4": "仅次于酸性焊条",
            "answer5": "",
            "content": "",
            "result": "3"
        },
        {
            "answer_id": "32233",
            "course_id": "47",
            "title": "电流经过的路径称为______。",
            "type": "2",
            "answer1": "电荷",
            "answer2": "电路",
            "answer3": "电子",
            "answer4": "电势",
            "answer5": "",
            "content": "",
            "result": "2"
        },
        {
            "answer_id": "32489",
            "course_id": "47",
            "title": "焊接工作中应严格执行______和岗位规程，注重安全生产，保证产品质量。",
            "type": "2",
            "answer1": "焊工纪律",
            "answer2": "质量要求",
            "answer3": "焊工工艺文件",
            "answer4": "企业规定",
            "answer5": "",
            "content": "",
            "result": "3"
        },
        {
            "answer_id": "32745",
            "course_id": "47",
            "title": "电焊机的技术标准规定，轻便型电弧焊电源的额定负载持续率可取值不包括______。",
            "type": "2",
            "answer1": "0.15",
            "answer2": "0.25",
            "answer3": "0.35",
            "answer4": "0.45",
            "answer5": "",
            "content": "",
            "result": "4"
        },
        {
            "answer_id": "33001",
            "course_id": "47",
            "title": "复杂曲线的气割在直线段，割炬______都可，但不允许______。",
            "type": "2",
            "answer1": "前倾、侧倾",
            "answer2": "前倾侧倾、后倾",
            "answer3": "前倾、侧倾后倾",
            "answer4": "前倾后倾、侧倾",
            "answer5": "",
            "content": "",
            "result": "4"
        },
        {
            "answer_id": "33257",
            "course_id": "47",
            "title": "开始气割时，割嘴垂直于管子底部，用______进行预热。",
            "type": "2",
            "answer1": "碳化焰",
            "answer2": "中性焰",
            "answer3": "氧化焰",
            "answer4": "任何类型火焰",
            "answer5": "",
            "content": "",
            "result": "2"
        },
        {
            "answer_id": "32235",
            "course_id": "47",
            "title": "在X射线探伤中，夹钨在胶片上呈现______。",
            "type": "2",
            "answer1": "椭圆形黑点",
            "answer2": "不规则的白亮块状",
            "answer3": "点状或条状",
            "answer4": "规则的黑色线状",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "32491",
            "course_id": "47",
            "title": "激光切割时，当功率一定时，切割氧气压力的最佳值随______的增加而减少。",
            "type": "2",
            "answer1": "表面粗糙度",
            "answer2": "喷嘴孔径",
            "answer3": "气体流量",
            "answer4": "板厚",
            "answer5": "",
            "content": "",
            "result": "4"
        },
        {
            "answer_id": "32747",
            "course_id": "47",
            "title": "合金钢中，合金元素的质量分数的总和______的钢称为低合金钢。",
            "type": "2",
            "answer1": "<1%",
            "answer2": "<2%",
            "answer3": "<5%",
            "answer4": "<10%",
            "answer5": "",
            "content": "",
            "result": "3"
        },
        {
            "answer_id": "33003",
            "course_id": "47",
            "title": "职业道德的意义不应该包括______。",
            "type": "2",
            "answer1": "有利于推动社会主义物质文明建设",
            "answer2": "有利于企业体制改革",
            "answer3": "有利于行业建设和发展",
            "answer4": "有利于个人的提高和发展",
            "answer5": "",
            "content": "",
            "result": "2"
        },
        {
            "answer_id": "33259",
            "course_id": "47",
            "title": "回火时已经及时切断了氧气，如果仍然听到割炬内有“嘶、嘶”的响声，说明火焰没熄灭，______。",
            "type": "2",
            "answer1": "应该迅速关闭乙炔瓶阀门",
            "answer2": "应该迅速关闭氧气瓶阀门",
            "answer3": "应该迅速关闭割炬乙炔阀门或拔下乙炔管",
            "answer4": "应该迅速将割炬放到水里",
            "answer5": "",
            "content": "",
            "result": "3"
        },
        {
            "answer_id": "32237",
            "course_id": "47",
            "title": "等离子弧切割方法除一般型外，派生出的型式有水再压缩等离子弧切割、空气等离子弧切割或______方法。",
            "type": "2",
            "answer1": "非转移型",
            "answer2": "水再压缩空气等离子弧切割",
            "answer3": "常用型",
            "answer4": "非联合型",
            "answer5": "",
            "content": "",
            "result": "2"
        },
        {
            "answer_id": "32493",
            "course_id": "47",
            "title": "按照金属在焊接过程中所处的状态及工艺特点的不同，可以把金属的焊接方法分为熔焊、______和钎焊三类。",
            "type": "2",
            "answer1": "压焊",
            "answer2": "铆焊",
            "answer3": "激光焊",
            "answer4": "摩擦焊",
            "answer5": "",
            "content": "",
            "result": "2"
        },
        {
            "answer_id": "32749",
            "course_id": "47",
            "title": "气割开坡口可以开______等，不能开______坡口。",
            "type": "2",
            "answer1": "V形、U形、Y形、X形",
            "answer2": "Y形、V形、、X形、U形",
            "answer3": "X形、U形、V形、Y形",
            "answer4": "Y形、U形、X形、V形",
            "answer5": "",
            "content": "",
            "result": "2"
        },
        {
            "answer_id": "33005",
            "course_id": "47",
            "title": "职业道德的意义之一是有利于推动______。",
            "type": "2",
            "answer1": "企业体制改革",
            "answer2": "产品价格的提高",
            "answer3": "不计报酬超强工作",
            "answer4": "社会主义物质文明和精神文明建设",
            "answer5": "",
            "content": "",
            "result": "4"
        },
        {
            "answer_id": "33261",
            "course_id": "47",
            "title": "管对接断口试验时，断口上绝不允许有______。",
            "type": "2",
            "answer1": "气孔",
            "answer2": "夹渣",
            "answer3": "裂纹",
            "answer4": "未焊透",
            "answer5": "",
            "content": "",
            "result": "3"
        },
        {
            "answer_id": "32239",
            "course_id": "47",
            "title": "埋弧焊的焊接方法代号是______。",
            "type": "2",
            "answer1": "131",
            "answer2": "12",
            "answer3": "111",
            "answer4": "141",
            "answer5": "",
            "content": "",
            "result": "2"
        },
        {
            "answer_id": "32495",
            "course_id": "47",
            "title": "弧焊整流器属于______电源。",
            "type": "2",
            "answer1": "逆变式",
            "answer2": "交直流",
            "answer3": "交流",
            "answer4": "直流",
            "answer5": "",
            "content": "",
            "result": "3"
        },
        {
            "answer_id": "32751",
            "course_id": "47",
            "title": "焊接从业人员在工作中应该谦虚谨慎，______，主动配合工作。",
            "type": "2",
            "answer1": "注重技能提高",
            "answer2": "团结合作",
            "answer3": "提高独立工作能力",
            "answer4": "提高焊接质量",
            "answer5": "",
            "content": "",
            "result": "2"
        },
        {
            "answer_id": "33007",
            "course_id": "47",
            "title": "我国射线探伤标准规定，焊缝质量分为四个等级，______是2级焊缝内允许存在的缺陷。",
            "type": "2",
            "answer1": "裂纹",
            "answer2": "未熔合",
            "answer3": "条状夹渣",
            "answer4": "未焊透",
            "answer5": "",
            "content": "",
            "result": "3"
        },
        {
            "answer_id": "33263",
            "course_id": "47",
            "title": "调质处理是指某些合金钢在正火后再进行______的连续热处理工艺。",
            "type": "2",
            "answer1": "低温回火",
            "answer2": "中温回火",
            "answer3": "高温回火",
            "answer4": "扩散退火",
            "answer5": "",
            "content": "",
            "result": "3"
        },
        {
            "answer_id": "32241",
            "course_id": "47",
            "title": "火焰热弯一般适用于______管子的弯头。",
            "type": "2",
            "answer1": "小口径",
            "answer2": "中口径",
            "answer3": "大口径",
            "answer4": "以上都可以",
            "answer5": "",
            "content": "",
            "result": "3"
        },
        {
            "answer_id": "32497",
            "course_id": "47",
            "title": "下列说法正确的是______。",
            "type": "2",
            "answer1": "搬动焊机时，为节省时间可以不切断电源",
            "answer2": "当埋弧焊机发生电器部分故障时，焊工应立即切断电源，自己动手进行检查",
            "answer3": "停止焊接后，操作工离开岗位时，应切断电源开关",
            "answer4": "在进行焊接作业时，焊工可以穿各种鞋子工作",
            "answer5": "",
            "content": "",
            "result": "3"
        },
        {
            "answer_id": "32753",
            "course_id": "47",
            "title": "根据GB/T1591—94规定，低合金高强度结构钢牌号由代表屈服点的字母“Q”屈服点数值，______符号三部分按顺序排列。",
            "type": "2",
            "answer1": "抗拉强度",
            "answer2": "质量等级",
            "answer3": "伸长率",
            "answer4": "冲击韧度",
            "answer5": "",
            "content": "",
            "result": "2"
        },
        {
            "answer_id": "33009",
            "course_id": "47",
            "title": "物质的分子式所表达的含义不包括下列______。",
            "type": "2",
            "answer1": "表示一种物质",
            "answer2": "表示改种物质的一个分子",
            "answer3": "表示组成该物质的各种元素",
            "answer4": "表示该物质的相对原子质量",
            "answer5": "",
            "content": "",
            "result": "4"
        },
        {
            "answer_id": "33265",
            "course_id": "47",
            "title": "胀接是利用管子和管板变形来______的一种连接方法。",
            "type": "2",
            "answer1": "实现连接",
            "answer2": "实现密封和紧固",
            "answer3": "焊接",
            "answer4": "紧固",
            "answer5": "",
            "content": "",
            "result": "2"
        },
        {
            "answer_id": "32243",
            "course_id": "47",
            "title": "电焊钳规格是按照焊接电源的额定焊接电流大小选定。也可按照______及焊条直径选择适用的电焊钳。",
            "type": "2",
            "answer1": "焊接电流大小",
            "answer2": "空载电压大小",
            "answer3": "电弧电压大小",
            "answer4": "额定焊接电压大小",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "32499",
            "course_id": "47",
            "title": "焊条电弧焊是采用熔渣和______联合保护的。",
            "type": "2",
            "answer1": "真空",
            "answer2": "惰性气体",
            "answer3": "气体",
            "answer4": "药皮",
            "answer5": "",
            "content": "",
            "result": "3"
        },
        {
            "answer_id": "32755",
            "course_id": "47",
            "title": "下列______不是洛氏硬度试验法测定硬度的优点。",
            "type": "2",
            "answer1": "简单迅速",
            "answer2": "可以测定最硬的金属，且压痕小",
            "answer3": "测定硬度值比较准确",
            "answer4": "可以测定成品及薄的工件",
            "answer5": "",
            "content": "",
            "result": "3"
        },
        {
            "answer_id": "33011",
            "course_id": "47",
            "title": "等离子切割割枪一般由电极、电极夹头、喷嘴、______、中间绝缘体、气室、水路、气路、馈电体等组成。",
            "type": "2",
            "answer1": "冷却水套",
            "answer2": "套棒",
            "answer3": "枪身",
            "answer4": "水管",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "33267",
            "course_id": "47",
            "title": "激光器现场操作和加工工作人员应穿______，减少漫反射的影响。",
            "type": "2",
            "answer1": "黑色工作服",
            "answer2": "白色工作服",
            "answer3": "灰色工作服",
            "answer4": "深色工作服",
            "answer5": "",
            "content": "",
            "result": "2"
        },
        {
            "answer_id": "32245",
            "course_id": "47",
            "title": "气焊、气割前应检查工作场地周围的环境，要离易燃、易暴物品______米以外。",
            "type": "2",
            "answer1": "2",
            "answer2": "3",
            "answer3": "4",
            "answer4": "5",
            "answer5": "",
            "content": "",
            "result": "4"
        },
        {
            "answer_id": "32501",
            "course_id": "47",
            "title": "酸性焊条的烘干温度不能太高，一般为______。",
            "type": "2",
            "answer1": "200～300℃",
            "answer2": "250～350℃",
            "answer3": "75～150℃",
            "answer4": "150～200℃",
            "answer5": "",
            "content": "",
            "result": "3"
        },
        {
            "answer_id": "32757",
            "course_id": "47",
            "title": "激光的特点为亮度高、______、单色性好。",
            "type": "2",
            "answer1": "方向性好",
            "answer2": "焦点唯一",
            "answer3": "光谱宽度宽",
            "answer4": "热源集中",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "33013",
            "course_id": "47",
            "title": "铁素体和渗碳体的机械混合物称为______。",
            "type": "2",
            "answer1": "奥氏体",
            "answer2": "珠光体",
            "answer3": "赖氏体",
            "answer4": "马氏体",
            "answer5": "",
            "content": "",
            "result": "2"
        },
        {
            "answer_id": "33269",
            "course_id": "47",
            "title": "导电体对电流的阻力叫做______。",
            "type": "2",
            "answer1": "电压",
            "answer2": "点位",
            "answer3": "电感",
            "answer4": "电阻",
            "answer5": "",
            "content": "",
            "result": "4"
        },
        {
            "answer_id": "32247",
            "course_id": "47",
            "title": "为了防止热裂纹产生，在焊接高合金钢时要求硫、磷的质量分数必须限制在______。",
            "type": "2",
            "answer1": "0.01％以下",
            "answer2": "0.02％以下",
            "answer3": "0.03％以下",
            "answer4": "0.04％以下",
            "answer5": "",
            "content": "",
            "result": "3"
        },
        {
            "answer_id": "32503",
            "course_id": "47",
            "title": "实现熔化焊接，关键是要用一个______、温度足够高的局部加热热源。",
            "type": "2",
            "answer1": "能量",
            "answer2": "可动",
            "answer3": "移动",
            "answer4": "能量集中",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "32759",
            "course_id": "47",
            "title": "气割的工具（除了割炬）和设备与气焊______。",
            "type": "2",
            "answer1": "完全相同",
            "answer2": "基本相同",
            "answer3": "完全不同",
            "answer4": "基本不同",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "33015",
            "course_id": "47",
            "title": "焊缝辅助符号“⌒”是表示焊缝______符号。",
            "type": "2",
            "answer1": "齐面",
            "answer2": "平面",
            "answer3": "凹面",
            "answer4": "凸面",
            "answer5": "",
            "content": "",
            "result": "4"
        },
        {
            "answer_id": "33271",
            "course_id": "47",
            "title": "下列焊丝中属于硬质合金堆焊焊丝的是______。",
            "type": "2",
            "answer1": "HS101",
            "answer2": "HS202",
            "answer3": "HS301",
            "answer4": "HS222",
            "answer5": "",
            "content": "",
            "result": "2"
        },
        {
            "answer_id": "32249",
            "course_id": "47",
            "title": "中华民族传统美德倡导______的人道主义精神。",
            "type": "2",
            "answer1": "仁爱",
            "answer2": "关怀",
            "answer3": "亲善",
            "answer4": "友好",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "32505",
            "course_id": "47",
            "title": "复杂曲线的气割在曲线段，割炬必须______于工件表面。",
            "type": "2",
            "answer1": "垂直",
            "answer2": "平行",
            "answer3": "倾斜60°",
            "answer4": "倾斜30°",
            "answer5": "",
            "content": "",
            "result": "4"
        },
        {
            "answer_id": "32761",
            "course_id": "47",
            "title": "焊条电弧焊一般安全操作规程之一是检查作业现场，以防发生______事故。",
            "type": "2",
            "answer1": "停产",
            "answer2": "断电",
            "answer3": "火灾或爆炸",
            "answer4": "误工",
            "answer5": "",
            "content": "",
            "result": "2"
        },
        {
            "answer_id": "33017",
            "course_id": "47",
            "title": "钢材的矫正，因手工矫正生产效率低，劳动强度大，要求操作工人技术水平高，因此，只有在没有______或无法应用机械设备时才采用。",
            "type": "2",
            "answer1": "矫正机床",
            "answer2": "加热设备",
            "answer3": "操作空间",
            "answer4": "技术工人",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "33273",
            "course_id": "47",
            "title": "常用的型号为SalSi-1的铝合金焊丝其牌号为______。",
            "type": "2",
            "answer1": "HS301",
            "answer2": "HS311",
            "answer3": "HS321",
            "answer4": "HS331",
            "answer5": "",
            "content": "",
            "result": "2"
        },
        {
            "answer_id": "32251",
            "course_id": "47",
            "title": "还原反应是______里的氧被夺去的反应。",
            "type": "2",
            "answer1": "含碳化合物",
            "answer2": "含氢化合物",
            "answer3": "含氮化合物",
            "answer4": "含氧化合物",
            "answer5": "",
            "content": "",
            "result": "4"
        },
        {
            "answer_id": "32507",
            "course_id": "47",
            "title": "由于焊接接头区产生不均匀组织转变而引起的应力称为______。",
            "type": "2",
            "answer1": "热应力",
            "answer2": "拘束应力",
            "answer3": "相变应力",
            "answer4": "氢致应力",
            "answer5": "",
            "content": "",
            "result": "3"
        },
        {
            "answer_id": "32763",
            "course_id": "47",
            "title": "焊工要自觉遵守和职业活动、行为有关的的制度和纪律，但______不属于与焊工职业活动有关的纪律。",
            "type": "2",
            "answer1": "劳动纪律",
            "answer2": "安全操作规程",
            "answer3": "履行岗位职责",
            "answer4": "遵守道德规范",
            "answer5": "",
            "content": "",
            "result": "4"
        },
        {
            "answer_id": "33019",
            "course_id": "47",
            "title": "下列焊接缺陷中属于内部缺陷的是______。",
            "type": "2",
            "answer1": "咬边",
            "answer2": "表面气孔",
            "answer3": "弧坑",
            "answer4": "夹渣",
            "answer5": "",
            "content": "",
            "result": "4"
        },
        {
            "answer_id": "33275",
            "course_id": "47",
            "title": "如果焊缝和______不在接头的同一侧，则将焊缝基本符号标在基准线的虚线侧。",
            "type": "2",
            "answer1": "辅助线",
            "answer2": "指引线",
            "answer3": "说明线",
            "answer4": "箭头线",
            "answer5": "",
            "content": "",
            "result": "4"
        },
        {
            "answer_id": "32253",
            "course_id": "47",
            "title": "动铁式弧焊变压器电源的外特性是靠______。",
            "type": "2",
            "answer1": "一次线圈漏磁来实现",
            "answer2": "二次线圈漏磁来实现",
            "answer3": "一次线圈、二次线圈漏磁来实现",
            "answer4": "调节活动铁心的漏磁来实现的",
            "answer5": "",
            "content": "",
            "result": "4"
        },
        {
            "answer_id": "32509",
            "course_id": "47",
            "title": "动圈式弧焊变压器电流的粗调节是通过______。",
            "type": "2",
            "answer1": "通过改变一次线圈匝数来实现",
            "answer2": "通过改变二次线圈匝数来实现",
            "answer3": "通过改变一次线圈、二次线圈匝数来实现",
            "answer4": "调节活动铁心与固定铁心的相对位置来实现的",
            "answer5": "",
            "content": "",
            "result": "3"
        },
        {
            "answer_id": "32765",
            "course_id": "47",
            "title": "等离子切割最常用的气体为氩气、氮气、______、氮氢混合气体、氩氢混合气体等。",
            "type": "2",
            "answer1": "氮氩混合气体",
            "answer2": "氧气",
            "answer3": "乙炔",
            "answer4": "丙烷",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "33021",
            "course_id": "47",
            "title": "下列______不是减小焊接应力的措施。",
            "type": "2",
            "answer1": "采用合理的焊接顺序",
            "answer2": "采用较小的焊接线能量",
            "answer3": "锤击法",
            "answer4": "热处理法",
            "answer5": "",
            "content": "",
            "result": "4"
        },
        {
            "answer_id": "33277",
            "course_id": "47",
            "title": "钢板对接立焊进行焊缝填充时，焊条与板件的下倾角为______。",
            "type": "2",
            "answer1": "10～20°",
            "answer2": "30～40°",
            "answer3": "50～60°",
            "answer4": "70～80°",
            "answer5": "",
            "content": "",
            "result": "4"
        },
        {
            "answer_id": "32255",
            "course_id": "47",
            "title": "空气等离子切割有两种型式，一是单一式空气等离子弧，另一种是______空气等离子弧切割。",
            "type": "2",
            "answer1": "复合式",
            "answer2": "多层式",
            "answer3": "两层式",
            "answer4": "三层式",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "32511",
            "course_id": "47",
            "title": "在未适当保护下的眼睛，长期慢性小剂量暴露于______，也可能发生调视机能减退，发生早期花眼。",
            "type": "2",
            "answer1": "电弧光",
            "answer2": "可见光",
            "answer3": "紫外线",
            "answer4": "红外线",
            "answer5": "",
            "content": "",
            "result": "3"
        },
        {
            "answer_id": "32767",
            "course_id": "47",
            "title": "焊接工艺评定是指为验证所拟定的焊接工艺的正确性而进行的______及结果评价。",
            "type": "2",
            "answer1": "试验过程",
            "answer2": "综合讨论",
            "answer3": "计算机模拟",
            "answer4": "综合评定",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "33023",
            "course_id": "47",
            "title": "测量电压时必须使用电压表，用符号______表示。",
            "type": "2",
            "answer1": "“A”",
            "answer2": "“V”",
            "answer3": "“W”",
            "answer4": "“R”",
            "answer5": "",
            "content": "",
            "result": "2"
        },
        {
            "answer_id": "33279",
            "course_id": "47",
            "title": "氧-乙炔焰切割______厚度钢板时，应选用G01-300或G02-300割炬。",
            "type": "2",
            "answer1": "超过100mm",
            "answer2": "超过50mm",
            "answer3": "超过10mm",
            "answer4": "超过200mm",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "33537",
            "course_id": "47",
            "title": "( )在焊缝表面缺陷中不允许存在裂纹。",
            "type": "1",
            "answer1": "正确",
            "answer2": "错误",
            "answer3": "",
            "answer4": "",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "33793",
            "course_id": "47",
            "title": "( )焊接通风是通过通风系统向车间送入新鲜空气，或将作业区内的有害烟气体排出从而改善作业环境，保护工人健康。",
            "type": "1",
            "answer1": "正确",
            "answer2": "错误",
            "answer3": "",
            "answer4": "",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "33539",
            "course_id": "47",
            "title": "( )电流的单位是安培（A），还有mA、μA、KA。",
            "type": "1",
            "answer1": "正确",
            "answer2": "错误",
            "answer3": "",
            "answer4": "",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "33795",
            "course_id": "47",
            "title": "( )焊接热裂纹按照产生形态、机理以及产生的温度区间可分为结晶裂纹、液化裂纹和再热裂纹。",
            "type": "1",
            "answer1": "正确",
            "answer2": "错误",
            "answer3": "",
            "answer4": "",
            "answer5": "",
            "content": "",
            "result": "2"
        },
        {
            "answer_id": "33541",
            "course_id": "47",
            "title": "( )企业文化是指企业等经济实体在生产经营中，伴随着自身的经济繁荣而逐步形成和确立并深深植根于企业每一个成员头脑中的独特的精神成果和思想观念，是企业的精神文化。",
            "type": "1",
            "answer1": "正确",
            "answer2": "错误",
            "answer3": "",
            "answer4": "",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "33797",
            "course_id": "47",
            "title": "( )焊接从业人员在工作中应该努力提高个人能力，团结合作并不重要。",
            "type": "1",
            "answer1": "正确",
            "answer2": "错误",
            "answer3": "",
            "answer4": "",
            "answer5": "",
            "content": "",
            "result": "2"
        },
        {
            "answer_id": "33543",
            "course_id": "47",
            "title": "( )钨极氩弧焊时结束后，焊接人员离开工作场所或焊机不使用时，可以不切断电源。",
            "type": "1",
            "answer1": "正确",
            "answer2": "错误",
            "answer3": "",
            "answer4": "",
            "answer5": "",
            "content": "",
            "result": "2"
        },
        {
            "answer_id": "33799",
            "course_id": "47",
            "title": "( )焊前预热有利于提高奥氏体不锈钢的耐晶间腐蚀能力。",
            "type": "1",
            "answer1": "正确",
            "answer2": "错误",
            "answer3": "",
            "answer4": "",
            "answer5": "",
            "content": "",
            "result": "2"
        },
        {
            "answer_id": "33545",
            "course_id": "47",
            "title": "( )对电源中点直接接地的低压电网中的用电器，可以把用电器的外壳接在中线上，叫保护接地。",
            "type": "1",
            "answer1": "正确",
            "answer2": "错误",
            "answer3": "",
            "answer4": "",
            "answer5": "",
            "content": "",
            "result": "2"
        },
        {
            "answer_id": "33801",
            "course_id": "47",
            "title": "( )矩形波交流弧焊电源特别适合于铝及铝合金钨极氩弧焊。",
            "type": "1",
            "answer1": "正确",
            "answer2": "错误",
            "answer3": "",
            "answer4": "",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "33547",
            "course_id": "47",
            "title": "( )逆变弧焊机电源通常都采用二相交流电源供电。",
            "type": "1",
            "answer1": "正确",
            "answer2": "错误",
            "answer3": "",
            "answer4": "",
            "answer5": "",
            "content": "",
            "result": "2"
        },
        {
            "answer_id": "33803",
            "course_id": "47",
            "title": "( )管对接断口试验时，断口上允许有未焊透，但未焊透的深度要≤δ15%，总长度≤10%的管子外圆周长。",
            "type": "1",
            "answer1": "正确",
            "answer2": "错误",
            "answer3": "",
            "answer4": "",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "33549",
            "course_id": "47",
            "title": "( )在禁火区内进行焊接作业试，必须实现到有关单位办理动火审批手续。",
            "type": "1",
            "answer1": "正确",
            "answer2": "错误",
            "answer3": "",
            "answer4": "",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "33805",
            "course_id": "47",
            "title": "( )焊接冷裂纹即延迟裂纹，可分为焊趾裂纹、焊道下裂纹及根部裂纹。",
            "type": "1",
            "answer1": "正确",
            "answer2": "错误",
            "answer3": "",
            "answer4": "",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "33551",
            "course_id": "47",
            "title": "( )垂直固定管定位焊时，采用与焊接工件相应型号焊条进行定位焊，焊点长度为5mm,厚度为2mm,必须焊透且无缺陷。",
            "type": "1",
            "answer1": "正确",
            "answer2": "错误",
            "answer3": "",
            "answer4": "",
            "answer5": "",
            "content": "",
            "result": "2"
        },
        {
            "answer_id": "33807",
            "course_id": "47",
            "title": "( )气割切口过宽的原因之一是氧气压力过大。",
            "type": "1",
            "answer1": "正确",
            "answer2": "错误",
            "answer3": "",
            "answer4": "",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "33553",
            "course_id": "47",
            "title": "( )电源型号的大类名称中字母A表示弧焊发动机。",
            "type": "1",
            "answer1": "正确",
            "answer2": "错误",
            "answer3": "",
            "answer4": "",
            "answer5": "",
            "content": "",
            "result": "2"
        },
        {
            "answer_id": "33809",
            "course_id": "47",
            "title": "( )职业道德是社会道德要求在经济行为和社会关系中的具体体现。",
            "type": "1",
            "answer1": "正确",
            "answer2": "错误",
            "answer3": "",
            "answer4": "",
            "answer5": "",
            "content": "",
            "result": "2"
        },
        {
            "answer_id": "33555",
            "course_id": "47",
            "title": "( )企业文化建设与职业道德培育相辅相成。",
            "type": "1",
            "answer1": "正确",
            "answer2": "错误",
            "answer3": "",
            "answer4": "",
            "answer5": "",
            "content": "",
            "result": "2"
        },
        {
            "answer_id": "33811",
            "course_id": "47",
            "title": "( )酸性焊条由于抗裂性能不好，不用于焊接低合金钢。",
            "type": "1",
            "answer1": "正确",
            "answer2": "错误",
            "answer3": "",
            "answer4": "",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "33557",
            "course_id": "47",
            "title": "( )生产中常用的矫正焊接变形的方法主要有散热法和锤击法。",
            "type": "1",
            "answer1": "正确",
            "answer2": "错误",
            "answer3": "",
            "answer4": "",
            "answer5": "",
            "content": "",
            "result": "2"
        },
        {
            "answer_id": "33813",
            "course_id": "47",
            "title": "( )外螺纹的牙顶（大径）用细实线表示，牙底（小径）用粗实线表示，并画到螺杆倒角或倒圆部分。",
            "type": "1",
            "answer1": "正确",
            "answer2": "错误",
            "answer3": "",
            "answer4": "",
            "answer5": "",
            "content": "",
            "result": "2"
        },
        {
            "answer_id": "33559",
            "course_id": "47",
            "title": "( )为了防止焊条受潮，尽量做到现用现拆包装。",
            "type": "1",
            "answer1": "正确",
            "answer2": "错误",
            "answer3": "",
            "answer4": "",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "33815",
            "course_id": "47",
            "title": "( )采用氧-乙炔焰切割，切割效率高，切割钢的速度比机械切割方法快。",
            "type": "1",
            "answer1": "正确",
            "answer2": "错误",
            "answer3": "",
            "answer4": "",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "33561",
            "course_id": "47",
            "title": "( )交流正弦波弧焊变压器具有结构简单、易造易修、成本低、磁偏吹小、空载损耗小、噪声小等优点。",
            "type": "1",
            "answer1": "正确",
            "answer2": "错误",
            "answer3": "",
            "answer4": "",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "33817",
            "course_id": "47",
            "title": "( )为了保证焊透，4mm厚以下的钢板都应留有钝边。",
            "type": "1",
            "answer1": "正确",
            "answer2": "错误",
            "answer3": "",
            "answer4": "",
            "answer5": "",
            "content": "",
            "result": "2"
        },
        {
            "answer_id": "33563",
            "course_id": "47",
            "title": "( )镍及镍合金焊丝型号的表示方法为ERNi错错-错，字母ER表示焊丝，ER后面的化学符号Ni表示为镍及镍合金焊丝。",
            "type": "1",
            "answer1": "正确",
            "answer2": "错误",
            "answer3": "",
            "answer4": "",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "33819",
            "course_id": "47",
            "title": "( )气焊、气割前对所有气路接头的检漏应使用肥皂水，严禁用明火捡漏。",
            "type": "1",
            "answer1": "正确",
            "answer2": "错误",
            "answer3": "",
            "answer4": "",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "33565",
            "course_id": "47",
            "title": "( )等离子弧切割是利用高速、高温和高能的等离子气流来加热和熔化被切割材料，并借助内部的或者外部的高速气流或水流将熔化材料排开直至等离子气流束穿透背面而形成割口。",
            "type": "1",
            "answer1": "正确",
            "answer2": "错误",
            "answer3": "",
            "answer4": "",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "33821",
            "course_id": "47",
            "title": "( )人的职业道德的提高有利于人的思想道德素质的全面提高。",
            "type": "1",
            "answer1": "正确",
            "answer2": "错误",
            "answer3": "",
            "answer4": "",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "33567",
            "course_id": "47",
            "title": "( )激光焊设备主要包括激光器、光学偏转聚焦系统、光束检测器、工作台（或专用焊机）和控制系统。",
            "type": "1",
            "answer1": "正确",
            "answer2": "错误",
            "answer3": "",
            "answer4": "",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "33823",
            "course_id": "47",
            "title": "( )碱性焊条在使用前可不用进行烘干。",
            "type": "1",
            "answer1": "正确",
            "answer2": "错误",
            "answer3": "",
            "answer4": "",
            "answer5": "",
            "content": "",
            "result": "2"
        },
        {
            "answer_id": "33569",
            "course_id": "47",
            "title": "( )焊条药皮中稳弧剂的主要作用是改善焊条引弧性能和提高焊接电弧的稳定性。",
            "type": "1",
            "answer1": "正确",
            "answer2": "错误",
            "answer3": "",
            "answer4": "",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "33825",
            "course_id": "47",
            "title": "( )在镍及镍合金焊丝ERNiCrFe-5中的“5”表示镍的含量为5％。",
            "type": "1",
            "answer1": "正确",
            "answer2": "错误",
            "answer3": "",
            "answer4": "",
            "answer5": "",
            "content": "",
            "result": "2"
        },
        {
            "answer_id": "33571",
            "course_id": "47",
            "title": "( )金属具有良好的导电性和导热性。",
            "type": "1",
            "answer1": "正确",
            "answer2": "错误",
            "answer3": "",
            "answer4": "",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "33827",
            "course_id": "47",
            "title": "( )普通螺纹的牙型代号为M，梯形螺纹的牙型代号为Tr，锯齿形螺纹的牙型代号为B。",
            "type": "1",
            "answer1": "正确",
            "answer2": "错误",
            "answer3": "",
            "answer4": "",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "33573",
            "course_id": "47",
            "title": "( )气割前不需要配备消防器材。",
            "type": "1",
            "answer1": "正确",
            "answer2": "错误",
            "answer3": "",
            "answer4": "",
            "answer5": "",
            "content": "",
            "result": "2"
        },
        {
            "answer_id": "33829",
            "course_id": "47",
            "title": "( )职业道德首先要从爱岗敬业、忠于职守的职业行为规范开始。",
            "type": "1",
            "answer1": "正确",
            "answer2": "错误",
            "answer3": "",
            "answer4": "",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "33575",
            "course_id": "47",
            "title": "( )职业道德是企业文化的基石。",
            "type": "1",
            "answer1": "正确",
            "answer2": "错误",
            "answer3": "",
            "answer4": "",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "33831",
            "course_id": "47",
            "title": "( )中华民族传统美德，是指中国五千年历史流传下来，具有影响，可以继承，并得到不断创新发展，有益于下代的优秀道德遗产。",
            "type": "1",
            "answer1": "正确",
            "answer2": "错误",
            "answer3": "",
            "answer4": "",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "33577",
            "course_id": "47",
            "title": "( )电压是电场内任意两点间的电位差，电压的方向规定从高电位到低电位，就是电位降的方向。",
            "type": "1",
            "answer1": "正确",
            "answer2": "错误",
            "answer3": "",
            "answer4": "",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "33833",
            "course_id": "47",
            "title": "( )中和反应的实质是酸中的氢离子跟碱中的氢氧根离子结合成水的反应。",
            "type": "1",
            "answer1": "正确",
            "answer2": "错误",
            "answer3": "",
            "answer4": "",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "33579",
            "course_id": "47",
            "title": "( )焊缝尺寸符号是表示坡口和根部间隙尺寸的符号。",
            "type": "1",
            "answer1": "正确",
            "answer2": "错误",
            "answer3": "",
            "answer4": "",
            "answer5": "",
            "content": "",
            "result": "2"
        },
        {
            "answer_id": "33835",
            "course_id": "47",
            "title": "( )等离子弧柱的温度高，远远超过所有金属以及非金属的熔点，所以可以切割绝大部分的金属材料和非金属材料。",
            "type": "1",
            "answer1": "正确",
            "answer2": "错误",
            "answer3": "",
            "answer4": "",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "33581",
            "course_id": "47",
            "title": "( )焊接电缆截面积的选择是根据最大的焊接电流和电缆长度来选择的。",
            "type": "1",
            "answer1": "正确",
            "answer2": "错误",
            "answer3": "",
            "answer4": "",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "33837",
            "course_id": "47",
            "title": "( )当焊接结构上既有对接焊缝也有角接焊缝时，应先焊角接焊缝。",
            "type": "1",
            "answer1": "正确",
            "answer2": "错误",
            "answer3": "",
            "answer4": "",
            "answer5": "",
            "content": "",
            "result": "2"
        },
        {
            "answer_id": "33583",
            "course_id": "47",
            "title": "( )元素本身没有“三态”之分，只有当元素组成具体的物质时，才有固态、液态和气态的区别。",
            "type": "1",
            "answer1": "正确",
            "answer2": "错误",
            "answer3": "",
            "answer4": "",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "33839",
            "course_id": "47",
            "title": "( )激光切割时，不同的切割机采用不同形状的喷嘴。",
            "type": "1",
            "answer1": "正确",
            "answer2": "错误",
            "answer3": "",
            "answer4": "",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "33585",
            "course_id": "47",
            "title": "( )我国射线探伤标准规定，焊缝质量分为四个等级，1级焊缝内允许有少量的气孔和夹渣。",
            "type": "1",
            "answer1": "正确",
            "answer2": "错误",
            "answer3": "",
            "answer4": "",
            "answer5": "",
            "content": "",
            "result": "2"
        },
        {
            "answer_id": "33841",
            "course_id": "47",
            "title": "( )一般小规格的钢板和型材也可以在调直压力机、摩擦压力机、曲柄压力机、杠杆压力机、千斤顶等设备上进行矫正。",
            "type": "1",
            "answer1": "正确",
            "answer2": "错误",
            "answer3": "",
            "answer4": "",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "33587",
            "course_id": "47",
            "title": "( )回火可以使钢在保持一定硬度的基础上提高钢的韧性。",
            "type": "1",
            "answer1": "正确",
            "answer2": "错误",
            "answer3": "",
            "answer4": "",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "33843",
            "course_id": "47",
            "title": "( )弧焊电源型号的小类名称中字母D表示下降特性的。",
            "type": "1",
            "answer1": "正确",
            "answer2": "错误",
            "answer3": "",
            "answer4": "",
            "answer5": "",
            "content": "",
            "result": "2"
        },
        {
            "answer_id": "33589",
            "course_id": "47",
            "title": "( )管对接断口试验时，断口上不允许有裂纹和未熔合。",
            "type": "1",
            "answer1": "正确",
            "answer2": "错误",
            "answer3": "",
            "answer4": "",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "33845",
            "course_id": "47",
            "title": "( )机械方法难以切割的截面形状和厚度，采用氧-乙炔焰切割比较经济。",
            "type": "1",
            "answer1": "正确",
            "answer2": "错误",
            "answer3": "",
            "answer4": "",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "33591",
            "course_id": "47",
            "title": "( )激光的光路系统应尽可能全封闭。",
            "type": "1",
            "answer1": "正确",
            "answer2": "错误",
            "answer3": "",
            "answer4": "",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "33847",
            "course_id": "47",
            "title": "( )并联式单相整流脉冲弧焊电源，脉冲电流常采用陡降特性的单相整流电路提供。",
            "type": "1",
            "answer1": "正确",
            "answer2": "错误",
            "answer3": "",
            "answer4": "",
            "answer5": "",
            "content": "",
            "result": "2"
        },
        {
            "answer_id": "33593",
            "course_id": "47",
            "title": "( )水是由两个氢元素和一个氧元素组成。",
            "type": "1",
            "answer1": "正确",
            "answer2": "错误",
            "answer3": "",
            "answer4": "",
            "answer5": "",
            "content": "",
            "result": "2"
        },
        {
            "answer_id": "33849",
            "course_id": "47",
            "title": "( )等离子切割气体流量大，利于压缩电弧，使等离子弧的能量更为集中。",
            "type": "1",
            "answer1": "正确",
            "answer2": "错误",
            "answer3": "",
            "answer4": "",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "33595",
            "course_id": "47",
            "title": "( )焊接工艺的正确性是指按拟定的焊接工艺生产的焊接接头是否能满足产品使用性能的要求。",
            "type": "1",
            "answer1": "正确",
            "answer2": "错误",
            "answer3": "",
            "answer4": "",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "33851",
            "course_id": "47",
            "title": "( )在标注轴类零件的直径时必须在数字前面加φ。",
            "type": "1",
            "answer1": "正确",
            "answer2": "错误",
            "answer3": "",
            "answer4": "",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "33597",
            "course_id": "47",
            "title": "( )焊丝可分为实芯焊丝和药芯焊丝。",
            "type": "1",
            "answer1": "正确",
            "answer2": "错误",
            "answer3": "",
            "answer4": "",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "33853",
            "course_id": "47",
            "title": "( )中和反应是酸和碱作用生成盐和水的反应。",
            "type": "1",
            "answer1": "正确",
            "answer2": "错误",
            "answer3": "",
            "answer4": "",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "33599",
            "course_id": "47",
            "title": "( )我国射线探伤标准规定，焊缝质量分为四个等级，1级焊缝内应无裂纹、未熔合、未焊透和条状夹渣。",
            "type": "1",
            "answer1": "正确",
            "answer2": "错误",
            "answer3": "",
            "answer4": "",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "33855",
            "course_id": "47",
            "title": "( )电压的单位是伏特（V），还有mV、μV、KV。",
            "type": "1",
            "answer1": "正确",
            "answer2": "错误",
            "answer3": "",
            "answer4": "",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "33601",
            "course_id": "47",
            "title": "( )合同是指平等主体的双方或多方当事人（自然人或法人）关于建立、变更、消灭民事法律关系的协议。此类合同是产生债的一种最为普遍和重要的根据，故又称债权合同。",
            "type": "1",
            "answer1": "正确",
            "answer2": "错误",
            "answer3": "",
            "answer4": "",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "33857",
            "course_id": "47",
            "title": "( )角变形是由于纵向收缩变形在焊缝厚度方向上分布不均匀所造成的。",
            "type": "1",
            "answer1": "正确",
            "answer2": "错误",
            "answer3": "",
            "answer4": "",
            "answer5": "",
            "content": "",
            "result": "2"
        },
        {
            "answer_id": "33603",
            "course_id": "47",
            "title": "( )气割作业中，由于某些工艺参数不当及工具、设备的原因也会造成切割缺陷。",
            "type": "1",
            "answer1": "正确",
            "answer2": "错误",
            "answer3": "",
            "answer4": "",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "33859",
            "course_id": "47",
            "title": "( )复杂曲线的气割在直线段，割炬前倾后倾都可，但不允许侧倾。",
            "type": "1",
            "answer1": "正确",
            "answer2": "错误",
            "answer3": "",
            "answer4": "",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "33605",
            "course_id": "47",
            "title": "( )表示电阻的符号是R，电阻的单位是Ω。",
            "type": "1",
            "answer1": "正确",
            "answer2": "错误",
            "answer3": "",
            "answer4": "",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "33861",
            "course_id": "47",
            "title": "( )激光焊设备中大多数光束检测器又称为激光功率计。",
            "type": "1",
            "answer1": "正确",
            "answer2": "错误",
            "answer3": "",
            "answer4": "",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "33607",
            "course_id": "47",
            "title": "( )着色探伤可以判断出缺陷的种类和大小。",
            "type": "1",
            "answer1": "正确",
            "answer2": "错误",
            "answer3": "",
            "answer4": "",
            "answer5": "",
            "content": "",
            "result": "2"
        },
        {
            "answer_id": "33863",
            "course_id": "47",
            "title": "( )钢材应严格按照生产计划提出的材料规格与数量发放。",
            "type": "1",
            "answer1": "正确",
            "answer2": "错误",
            "answer3": "",
            "answer4": "",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "33609",
            "course_id": "47",
            "title": "( )等离子切割电流过大，易烧损电极和喷嘴，且易产生双弧，因此相应于一定的电极和喷嘴有一合适的电流。",
            "type": "1",
            "answer1": "正确",
            "answer2": "错误",
            "answer3": "",
            "answer4": "",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "33865",
            "course_id": "47",
            "title": "( )含碳量为0",
            "type": "1",
            "answer1": "正确",
            "answer2": "错误",
            "answer3": "",
            "answer4": "",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "33611",
            "course_id": "47",
            "title": "( )晶格是金属的原子按一定方式有规则的排列成一定空间几何形状的结晶格子。",
            "type": "1",
            "answer1": "正确",
            "answer2": "错误",
            "answer3": "",
            "answer4": "",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "33867",
            "course_id": "47",
            "title": "( )原子的质量主要集中在核外电子上。",
            "type": "1",
            "answer1": "正确",
            "answer2": "错误",
            "answer3": "",
            "answer4": "",
            "answer5": "",
            "content": "",
            "result": "2"
        },
        {
            "answer_id": "33613",
            "course_id": "47",
            "title": "( )等离子弧磁收缩是指弧柱电流本身产生的磁场对弧柱有压缩作用（即磁收缩效应）。",
            "type": "1",
            "answer1": "正确",
            "answer2": "错误",
            "answer3": "",
            "answer4": "",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "33869",
            "course_id": "47",
            "title": "( )在焊接过程中，必须对焊件施加一定的压力（加热或不加热）以完成焊接的方法。",
            "type": "1",
            "answer1": "正确",
            "answer2": "错误",
            "answer3": "",
            "answer4": "",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "33615",
            "course_id": "47",
            "title": "( )焊接过程中，焊接烟尘是危害工人健康的主要因素之一，因此必须采取通风措施，降低工人呼吸带空气中的烟尘及有害气体浓度。",
            "type": "1",
            "answer1": "正确",
            "answer2": "错误",
            "answer3": "",
            "answer4": "",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "33871",
            "course_id": "47",
            "title": "( )空气等离子弧切割和水再压缩等离子弧切割的喷嘴距离工件高度可略小。",
            "type": "1",
            "answer1": "正确",
            "answer2": "错误",
            "answer3": "",
            "answer4": "",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "33617",
            "course_id": "47",
            "title": "( )等离子切割速度与材质板厚、切割电流无关。",
            "type": "1",
            "answer1": "正确",
            "answer2": "错误",
            "answer3": "",
            "answer4": "",
            "answer5": "",
            "content": "",
            "result": "2"
        },
        {
            "answer_id": "33873",
            "course_id": "47",
            "title": "( )还原反应是一种物质被氧化，另一种物质被还原的反应。",
            "type": "1",
            "answer1": "正确",
            "answer2": "错误",
            "answer3": "",
            "answer4": "",
            "answer5": "",
            "content": "",
            "result": "2"
        },
        {
            "answer_id": "33619",
            "course_id": "47",
            "title": "( )动圈式弧焊变压器电流的细调节是通过改变一次线圈、二次线圈的距离来实现。",
            "type": "1",
            "answer1": "正确",
            "answer2": "错误",
            "answer3": "",
            "answer4": "",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "33875",
            "course_id": "47",
            "title": "( )等离子切割气体流量应与喷嘴孔径相适应。",
            "type": "1",
            "answer1": "正确",
            "answer2": "错误",
            "answer3": "",
            "answer4": "",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "33621",
            "course_id": "47",
            "title": "( )从事职业活动的人要自觉遵守劳动纪律、安全操作规程等有关制度和纪律。",
            "type": "1",
            "answer1": "正确",
            "answer2": "错误",
            "answer3": "",
            "answer4": "",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "33877",
            "course_id": "47",
            "title": "( )焊接弧光的红外线辐射会造成对眼睛的损害，有可能引起电光性眼炎。",
            "type": "1",
            "answer1": "正确",
            "answer2": "错误",
            "answer3": "",
            "answer4": "",
            "answer5": "",
            "content": "",
            "result": "2"
        },
        {
            "answer_id": "33623",
            "course_id": "47",
            "title": "( )虚线、点化线及双点化线的线段长度和间隔应各自大致相等。",
            "type": "1",
            "answer1": "正确",
            "answer2": "错误",
            "answer3": "",
            "answer4": "",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "33879",
            "course_id": "47",
            "title": "( )流行的质量管理方法有全面质量管理、六西格玛和QC七大手法。",
            "type": "1",
            "answer1": "正确",
            "answer2": "错误",
            "answer3": "",
            "answer4": "",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "33625",
            "course_id": "47",
            "title": "( )在铁碳平衡状态图中，ECF线为共晶反应线，表示液体缓慢冷却至该温度时发生。共晶反应，生成赖氏体组织。",
            "type": "1",
            "answer1": "正确",
            "answer2": "错误",
            "answer3": "",
            "answer4": "",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "33881",
            "course_id": "47",
            "title": "( )定位焊时，为了防止开裂应尽量避免强行组装后进行定位焊，必要时采用碱性焊条。",
            "type": "1",
            "answer1": "正确",
            "answer2": "错误",
            "answer3": "",
            "answer4": "",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "33627",
            "course_id": "47",
            "title": "( )质量管理是指对工程质量的控制。",
            "type": "1",
            "answer1": "正确",
            "answer2": "错误",
            "answer3": "",
            "answer4": "",
            "answer5": "",
            "content": "",
            "result": "2"
        },
        {
            "answer_id": "33883",
            "course_id": "47",
            "title": "( )正火可以细化晶粒，提高钢的综合力学性能。",
            "type": "1",
            "answer1": "正确",
            "answer2": "错误",
            "answer3": "",
            "answer4": "",
            "answer5": "",
            "content": "",
            "result": "2"
        },
        {
            "answer_id": "33629",
            "course_id": "47",
            "title": "( )图的比例是图样中图形与其实物相应要素的线性尺寸之比。",
            "type": "1",
            "answer1": "正确",
            "answer2": "错误",
            "answer3": "",
            "answer4": "",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "33885",
            "course_id": "47",
            "title": "( )在HAF603中手工电弧焊的代号是HWS。",
            "type": "1",
            "answer1": "正确",
            "answer2": "错误",
            "answer3": "",
            "answer4": "",
            "answer5": "",
            "content": "",
            "result": "2"
        },
        {
            "answer_id": "33631",
            "course_id": "47",
            "title": "( )等离子切割开坡口时，要特别注意割口底部不能残留熔渣，不然会增加焊接装配的困难。",
            "type": "1",
            "answer1": "正确",
            "answer2": "错误",
            "answer3": "",
            "answer4": "",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "33887",
            "course_id": "47",
            "title": "( )碳钢焊剂的型号分类是根据焊缝金属的力学性能和焊剂渣系划分的。",
            "type": "1",
            "answer1": "正确",
            "answer2": "错误",
            "answer3": "",
            "answer4": "",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "33633",
            "course_id": "47",
            "title": "( )焊接电缆截面积的选择是根据焊接电源种类和电缆长度来选择的。",
            "type": "1",
            "answer1": "正确",
            "answer2": "错误",
            "answer3": "",
            "answer4": "",
            "answer5": "",
            "content": "",
            "result": "2"
        },
        {
            "answer_id": "33889",
            "course_id": "47",
            "title": "( )一般钢材是按屈服点来确定等级，而碳钢焊条是按熔敷金属抗拉强度的最小值来确定强度等级的。",
            "type": "1",
            "answer1": "正确",
            "answer2": "错误",
            "answer3": "",
            "answer4": "",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "33635",
            "course_id": "47",
            "title": "( )在同一电路中，如果两个电阻中通过的电流相同，则这两个电阻一定是串联起来的。",
            "type": "1",
            "answer1": "正确",
            "answer2": "错误",
            "answer3": "",
            "answer4": "",
            "answer5": "",
            "content": "",
            "result": "2"
        },
        {
            "answer_id": "33891",
            "course_id": "47",
            "title": "( )从铁碳合金状态图中，低碳钢室温下的组织为珠光体+铁素体。",
            "type": "1",
            "answer1": "正确",
            "answer2": "错误",
            "answer3": "",
            "answer4": "",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "33637",
            "course_id": "47",
            "title": "( )对接接头平焊位置的焊缝余高差不得超过5mm。",
            "type": "1",
            "answer1": "正确",
            "answer2": "错误",
            "answer3": "",
            "answer4": "",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "33893",
            "course_id": "47",
            "title": "( )职业道德的意义也包括有利于企业体制改革。",
            "type": "1",
            "answer1": "正确",
            "answer2": "错误",
            "answer3": "",
            "answer4": "",
            "answer5": "",
            "content": "",
            "result": "2"
        },
        {
            "answer_id": "33639",
            "course_id": "47",
            "title": "( )焊接从业人员要认真学习专业知识，重视岗位技能训练。",
            "type": "1",
            "answer1": "正确",
            "answer2": "错误",
            "answer3": "",
            "answer4": "",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "33895",
            "course_id": "47",
            "title": "( )由于焊接电源输出电压较低，焊接场地湿度较大时，也不必作隔离防护。",
            "type": "1",
            "answer1": "正确",
            "answer2": "错误",
            "answer3": "",
            "answer4": "",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "33641",
            "course_id": "47",
            "title": "( )产品质量是企业在市场经济中赖以生存的重要依据。",
            "type": "1",
            "answer1": "正确",
            "answer2": "错误",
            "answer3": "",
            "answer4": "",
            "answer5": "",
            "content": "",
            "result": "2"
        },
        {
            "answer_id": "33897",
            "course_id": "47",
            "title": "( )用氧-乙炔切割淬火倾向较大的钢材时，为了避免切口淬火或产生裂纹，应采取适当减少预热火焰功率和加快切割速度。",
            "type": "1",
            "answer1": "正确",
            "answer2": "错误",
            "answer3": "",
            "answer4": "",
            "answer5": "",
            "content": "",
            "result": "2"
        },
        {
            "answer_id": "33643",
            "course_id": "47",
            "title": "( )电弧焊电源配套的电焊钳规格是按照电源的额定焊接电流大小选定。也可按照电弧电压大小选择适用的电焊钳。",
            "type": "1",
            "answer1": "正确",
            "answer2": "错误",
            "answer3": "",
            "answer4": "",
            "answer5": "",
            "content": "",
            "result": "2"
        },
        {
            "answer_id": "33899",
            "course_id": "47",
            "title": "( )锅炉压力容器压力管道焊工合格证（合格项目）有效期为3年。",
            "type": "1",
            "answer1": "正确",
            "answer2": "错误",
            "answer3": "",
            "answer4": "",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "33645",
            "course_id": "47",
            "title": "( )氧气瓶应远离操作地点10米以上，以防暴晒和高温。",
            "type": "1",
            "answer1": "正确",
            "answer2": "错误",
            "answer3": "",
            "answer4": "",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "33901",
            "course_id": "47",
            "title": "( )焊缝的型式有I型焊缝、V型焊缝、U型焊缝及角焊缝等。",
            "type": "1",
            "answer1": "正确",
            "answer2": "错误",
            "answer3": "",
            "answer4": "",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "33647",
            "course_id": "47",
            "title": "( )节俭是美德，但不利于拉动经济增长。",
            "type": "1",
            "answer1": "正确",
            "answer2": "错误",
            "answer3": "",
            "answer4": "",
            "answer5": "",
            "content": "",
            "result": "2"
        },
        {
            "answer_id": "33903",
            "course_id": "47",
            "title": "( )在非晶体中，原子是散乱分布，至多有些局部的短程规则排列。",
            "type": "1",
            "answer1": "正确",
            "answer2": "错误",
            "answer3": "",
            "answer4": "",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "33649",
            "course_id": "47",
            "title": "( )细齿锉适用于锉削软金属、加工余量大、加工精度低及表面粗糙度要求高的零件。",
            "type": "1",
            "answer1": "正确",
            "answer2": "错误",
            "answer3": "",
            "answer4": "",
            "answer5": "",
            "content": "",
            "result": "2"
        },
        {
            "answer_id": "33905",
            "course_id": "47",
            "title": "( )等离子切割大厚度板材和采用双原子气体时，空载电压相应要高。",
            "type": "1",
            "answer1": "正确",
            "answer2": "错误",
            "answer3": "",
            "answer4": "",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "33651",
            "course_id": "47",
            "title": "( )同一产品的图样可以采用不留装订边和留有装订边两种图纸格式。",
            "type": "1",
            "answer1": "正确",
            "answer2": "错误",
            "answer3": "",
            "answer4": "",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "33907",
            "course_id": "47",
            "title": "( )国家标准中规定用剖视的方法来表达机件的内部结构形状。",
            "type": "1",
            "answer1": "正确",
            "answer2": "错误",
            "answer3": "",
            "answer4": "",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "33653",
            "course_id": "47",
            "title": "( )一般来说，在焊接产品以前，企业应根据产品的涉及要求、技术条件和相关的规程、标准的要求来确定该产品是否需要做焊接工艺评定。",
            "type": "1",
            "answer1": "正确",
            "answer2": "错误",
            "answer3": "",
            "answer4": "",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "33909",
            "course_id": "47",
            "title": "( )管板焊接宏观金相试验时，检查面上不能有裂纹和未熔合。",
            "type": "1",
            "answer1": "正确",
            "answer2": "错误",
            "answer3": "",
            "answer4": "",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "33655",
            "course_id": "47",
            "title": "( )右手螺旋法则是指以右手拇指竖起表示电流的方向，其余四指弯曲，则四指弯曲的指向就是电流磁场的方向。",
            "type": "1",
            "answer1": "正确",
            "answer2": "错误",
            "answer3": "",
            "answer4": "",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "33911",
            "course_id": "47",
            "title": "( )硅弧焊整流器是一种将交流电经变压、整流转换成直流电的焊接电源。",
            "type": "1",
            "answer1": "正确",
            "answer2": "错误",
            "answer3": "",
            "answer4": "",
            "answer5": "",
            "content": "",
            "result": "2"
        },
        {
            "answer_id": "33657",
            "course_id": "47",
            "title": "( )定位焊时容易产生咬边缺陷，故焊接电流应比正式焊接时低10%～15%。",
            "type": "1",
            "answer1": "正确",
            "answer2": "错误",
            "answer3": "",
            "answer4": "",
            "answer5": "",
            "content": "",
            "result": "2"
        },
        {
            "answer_id": "33913",
            "course_id": "47",
            "title": "( )对于低碳钢、16Mn等一般性结构，焊后可以不必采取消除残余应力的措施。",
            "type": "1",
            "answer1": "正确",
            "answer2": "错误",
            "answer3": "",
            "answer4": "",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "33659",
            "course_id": "47",
            "title": "( )氧-乙炔气割大厚度钢板时，应采用氧气瓶排和乙炔气瓶排供气，以增加连续工作时间。",
            "type": "1",
            "answer1": "正确",
            "answer2": "错误",
            "answer3": "",
            "answer4": "",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "33915",
            "course_id": "47",
            "title": "( )激光光斑模式决定了激光束的质量，它对激光的切割能力和切缝大小及切口粗糙度等均有极大影响。",
            "type": "1",
            "answer1": "正确",
            "answer2": "错误",
            "answer3": "",
            "answer4": "",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "33661",
            "course_id": "47",
            "title": "( )硅弧焊整流器是一种将直流电经变压、整流转换成交流电的焊接电源。",
            "type": "1",
            "answer1": "正确",
            "answer2": "错误",
            "answer3": "",
            "answer4": "",
            "answer5": "",
            "content": "",
            "result": "2"
        },
        {
            "answer_id": "33917",
            "course_id": "47",
            "title": "( )有心冷弯会使弯头外侧壁厚减薄量增加，弯管功率较大，并且对大口径管子不适用。",
            "type": "1",
            "answer1": "正确",
            "answer2": "错误",
            "answer3": "",
            "answer4": "",
            "answer5": "",
            "content": "",
            "result": "2"
        },
        {
            "answer_id": "33663",
            "course_id": "47",
            "title": "( )在中、厚板焊接时，对同一厚度的材料，其他条件不变时，焊接层数增加提高了焊接接头的塑性和韧性。",
            "type": "1",
            "answer1": "正确",
            "answer2": "错误",
            "answer3": "",
            "answer4": "",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "33919",
            "course_id": "47",
            "title": "( )《中华人民共和国消费者权益保护法》颁布于1993年。",
            "type": "1",
            "answer1": "正确",
            "answer2": "错误",
            "answer3": "",
            "answer4": "",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "33665",
            "course_id": "47",
            "title": "( )道德一种社会意识形态，是人们共同生活及其行为的准则与规范。",
            "type": "1",
            "answer1": "正确",
            "answer2": "错误",
            "answer3": "",
            "answer4": "",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "33921",
            "course_id": "47",
            "title": "( )质量管理是指为了实现质量目标，而进行的所有管理性质的活动。",
            "type": "1",
            "answer1": "正确",
            "answer2": "错误",
            "answer3": "",
            "answer4": "",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "33667",
            "course_id": "47",
            "title": "( )职业道德是事业成功的保证。",
            "type": "1",
            "answer1": "正确",
            "answer2": "错误",
            "answer3": "",
            "answer4": "",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "33923",
            "course_id": "47",
            "title": "( )CO2气体保护焊安全操作规程之一，由于金属飞溅引起火灾的危险性比其它焊接方法小，不必采取防火措施。",
            "type": "1",
            "answer1": "正确",
            "answer2": "错误",
            "answer3": "",
            "answer4": "",
            "answer5": "",
            "content": "",
            "result": "2"
        },
        {
            "answer_id": "33669",
            "course_id": "47",
            "title": "( )《中华人民共和国消费者权益保护法》颁布于1986年。",
            "type": "1",
            "answer1": "正确",
            "answer2": "错误",
            "answer3": "",
            "answer4": "",
            "answer5": "",
            "content": "",
            "result": "2"
        },
        {
            "answer_id": "33925",
            "course_id": "47",
            "title": "( )焊接接头常温拉伸试验的合格标准是焊接接头的抗拉强度不低于母材抗拉强度规定值的上限。",
            "type": "1",
            "answer1": "正确",
            "answer2": "错误",
            "answer3": "",
            "answer4": "",
            "answer5": "",
            "content": "",
            "result": "2"
        },
        {
            "answer_id": "33671",
            "course_id": "47",
            "title": "( )装配图是表达机器或部件的工作原理、结构形状和装配关系的图样。",
            "type": "1",
            "answer1": "正确",
            "answer2": "错误",
            "answer3": "",
            "answer4": "",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "33927",
            "course_id": "47",
            "title": "( )氩气瓶是一种钢质圆柱形高压容器，其外表涂成银灰色并注有深绿色“氩”字标志字样。",
            "type": "1",
            "answer1": "正确",
            "answer2": "错误",
            "answer3": "",
            "answer4": "",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "33673",
            "course_id": "47",
            "title": "( )焊接工作区域的车辆通道宽度不小于3m，人行通道不小于1",
            "type": "1",
            "answer1": "正确",
            "answer2": "错误",
            "answer3": "",
            "answer4": "",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "33929",
            "course_id": "47",
            "title": "( )钎焊是利用某些熔点高于母材的金属作为钎料，将焊件和钎料加热到高于钎料熔点，但低于母材熔点的温度，利用液态钎料湿润母材，填充接头间隙并与母材相互扩散实现连接焊件的方法。",
            "type": "1",
            "answer1": "正确",
            "answer2": "错误",
            "answer3": "",
            "answer4": "",
            "answer5": "",
            "content": "",
            "result": "2"
        },
        {
            "answer_id": "33675",
            "course_id": "47",
            "title": "( )激光器按照激光工作物质状态可分为：固体激光器和气体激光器。",
            "type": "1",
            "answer1": "正确",
            "answer2": "错误",
            "answer3": "",
            "answer4": "",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "33931",
            "course_id": "47",
            "title": "( )焊件厚度是选择焊接电流时，考虑的因素之一。",
            "type": "1",
            "answer1": "正确",
            "answer2": "错误",
            "answer3": "",
            "answer4": "",
            "answer5": "",
            "content": "",
            "result": "2"
        },
        {
            "answer_id": "33677",
            "course_id": "47",
            "title": "( )电弧焊电源在额定负载持续率工作允许使用的最小焊接电流叫额定焊接电流。",
            "type": "1",
            "answer1": "正确",
            "answer2": "错误",
            "answer3": "",
            "answer4": "",
            "answer5": "",
            "content": "",
            "result": "2"
        },
        {
            "answer_id": "33933",
            "course_id": "47",
            "title": "( )质量管理是指为了实现质量方针，而进行的所有管理性质的活动。",
            "type": "1",
            "answer1": "正确",
            "answer2": "错误",
            "answer3": "",
            "answer4": "",
            "answer5": "",
            "content": "",
            "result": "2"
        },
        {
            "answer_id": "33423",
            "course_id": "47",
            "title": "( )热处理是指将金属加热到一定温度，并保持一定时间，然后以一定的冷却速度冷却到室温的过程。",
            "type": "1",
            "answer1": "正确",
            "answer2": "错误",
            "answer3": "",
            "answer4": "",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "33679",
            "course_id": "47",
            "title": "( )一个物体拥有两个投影就可以准确表达物体的形状。",
            "type": "1",
            "answer1": "正确",
            "answer2": "错误",
            "answer3": "",
            "answer4": "",
            "answer5": "",
            "content": "",
            "result": "2"
        },
        {
            "answer_id": "33935",
            "course_id": "47",
            "title": "( )焊接从业人员在工作中应该谦虚谨慎，团结合作，主动配合工作。",
            "type": "1",
            "answer1": "正确",
            "answer2": "错误",
            "answer3": "",
            "answer4": "",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "33425",
            "course_id": "47",
            "title": "( )连弧焊法是在焊接过程中，电弧连续燃烧，不熄灭，采取较大的坡口钝边间隙，选用较小的焊接电流，始终保持短弧连续施焊。",
            "type": "1",
            "answer1": "正确",
            "answer2": "错误",
            "answer3": "",
            "answer4": "",
            "answer5": "",
            "content": "",
            "result": "2"
        },
        {
            "answer_id": "33681",
            "course_id": "47",
            "title": "( )塑性是指金属材料在外力作用下产生塑性变形的能力。",
            "type": "1",
            "answer1": "正确",
            "answer2": "错误",
            "answer3": "",
            "answer4": "",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "33427",
            "course_id": "47",
            "title": "( )激光可切割钛合金，速度快，质量好。",
            "type": "1",
            "answer1": "正确",
            "answer2": "错误",
            "answer3": "",
            "answer4": "",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "33683",
            "course_id": "47",
            "title": "( )在装配图中，可用视图、剖视图或剖面单独表达某个零件的结构形状，但必须在视图上方标注对应说明。",
            "type": "1",
            "answer1": "正确",
            "answer2": "错误",
            "answer3": "",
            "answer4": "",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "33429",
            "course_id": "47",
            "title": "( )道德是一种社会意识形态，而法律是由国家制定或认可的，由国家强制力保证实施的，以规定当事人权利和义务为内容的具有普遍约束力的社会规范。",
            "type": "1",
            "answer1": "正确",
            "answer2": "错误",
            "answer3": "",
            "answer4": "",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "33685",
            "course_id": "47",
            "title": "( )弧焊电源型号的大类名称中字母B表示弧焊发动机。",
            "type": "1",
            "answer1": "正确",
            "answer2": "错误",
            "answer3": "",
            "answer4": "",
            "answer5": "",
            "content": "",
            "result": "2"
        },
        {
            "answer_id": "33431",
            "course_id": "47",
            "title": "( )焊接从业人员只要技能好，不必进行技能训练及专业知识学习。",
            "type": "1",
            "answer1": "正确",
            "answer2": "错误",
            "answer3": "",
            "answer4": "",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "33687",
            "course_id": "47",
            "title": "( )同焊炬一样，割炬也有射吸式和等压式两种。",
            "type": "1",
            "answer1": "正确",
            "answer2": "错误",
            "answer3": "",
            "answer4": "",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "33433",
            "course_id": "47",
            "title": "( )目前，常用的弧焊电源包括弧焊变压器和弧焊整流器两种。",
            "type": "1",
            "answer1": "正确",
            "answer2": "错误",
            "answer3": "",
            "answer4": "",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "33689",
            "course_id": "47",
            "title": "( )碳钢焊条的选用应遵循等强度的原则。",
            "type": "1",
            "answer1": "正确",
            "answer2": "错误",
            "answer3": "",
            "answer4": "",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "33435",
            "course_id": "47",
            "title": "( )等离子弧切割方法除一般型外，派生出的型式有水再压缩等离子弧切割、空气等离子弧切割或水再压缩空气等离子弧切割方法。",
            "type": "1",
            "answer1": "正确",
            "answer2": "错误",
            "answer3": "",
            "answer4": "",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "33691",
            "course_id": "47",
            "title": "( )易燃物品钨极氩弧焊场所不得小于15m。",
            "type": "1",
            "answer1": "正确",
            "answer2": "错误",
            "answer3": "",
            "answer4": "",
            "answer5": "",
            "content": "",
            "result": "2"
        },
        {
            "answer_id": "33437",
            "course_id": "47",
            "title": "( )职业道德包括很多内容，但是不包括职业道德品质。",
            "type": "1",
            "answer1": "正确",
            "answer2": "错误",
            "answer3": "",
            "answer4": "",
            "answer5": "",
            "content": "",
            "result": "2"
        },
        {
            "answer_id": "33693",
            "course_id": "47",
            "title": "( )动铁式弧焊变压器电流的粗调节是通过通过改变一次线圈、二次线圈匝数来实现。",
            "type": "1",
            "answer1": "正确",
            "answer2": "错误",
            "answer3": "",
            "answer4": "",
            "answer5": "",
            "content": "",
            "result": "2"
        },
        {
            "answer_id": "33439",
            "course_id": "47",
            "title": "( )导体电阻的大小与物质的导电性能即电阻率及导体的长度成反比，而与导体的截面积成正比。",
            "type": "1",
            "answer1": "正确",
            "answer2": "错误",
            "answer3": "",
            "answer4": "",
            "answer5": "",
            "content": "",
            "result": "2"
        },
        {
            "answer_id": "33695",
            "course_id": "47",
            "title": "( )额定焊接电流是指弧焊电源在额定负载持续率工作允许使用的最大焊接电流。",
            "type": "1",
            "answer1": "正确",
            "answer2": "错误",
            "answer3": "",
            "answer4": "",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "33441",
            "course_id": "47",
            "title": "( )气割常见缺陷中有切口偏离切割线。",
            "type": "1",
            "answer1": "正确",
            "answer2": "错误",
            "answer3": "",
            "answer4": "",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "33697",
            "course_id": "47",
            "title": "( )一般来说，锯削软金属的工件用细齿锯条，锯削硬金属的工件及薄板和薄壁管子时用粗齿锯条。",
            "type": "1",
            "answer1": "正确",
            "answer2": "错误",
            "answer3": "",
            "answer4": "",
            "answer5": "",
            "content": "",
            "result": "2"
        },
        {
            "answer_id": "33443",
            "course_id": "47",
            "title": "( )导体电阻的大小与物质的导电性能即电阻率及导体的长度成正比，而与导体的截面积成反比。",
            "type": "1",
            "answer1": "正确",
            "answer2": "错误",
            "answer3": "",
            "answer4": "",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "33699",
            "course_id": "47",
            "title": "( )劳动法是整个法律体系中一个重要的、独立的法律部门。",
            "type": "1",
            "answer1": "正确",
            "answer2": "错误",
            "answer3": "",
            "answer4": "",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "33445",
            "course_id": "47",
            "title": "( )在机械制图中，所画图形不论放大或缩小，在标注尺寸时，应按机件实际尺寸标注，与图形比例无关。",
            "type": "1",
            "answer1": "正确",
            "answer2": "错误",
            "answer3": "",
            "answer4": "",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "33701",
            "course_id": "47",
            "title": "( )低温钢大部分是一些含Nb的低碳低合金钢。",
            "type": "1",
            "answer1": "正确",
            "answer2": "错误",
            "answer3": "",
            "answer4": "",
            "answer5": "",
            "content": "",
            "result": "2"
        },
        {
            "answer_id": "33447",
            "course_id": "47",
            "title": "( )碳弧气刨时，只要是带铜皮的碳棒就可以。",
            "type": "1",
            "answer1": "正确",
            "answer2": "错误",
            "answer3": "",
            "answer4": "",
            "answer5": "",
            "content": "",
            "result": "2"
        },
        {
            "answer_id": "33703",
            "course_id": "47",
            "title": "( )激光焊设备中光束检测器有两个作用。",
            "type": "1",
            "answer1": "正确",
            "answer2": "错误",
            "answer3": "",
            "answer4": "",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "33449",
            "course_id": "47",
            "title": "( )熔焊是利用局部加热使连接处的母材金属熔化，再加入（或不加入）填充金属形成焊缝而结合的方法。",
            "type": "1",
            "answer1": "正确",
            "answer2": "错误",
            "answer3": "",
            "answer4": "",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "33705",
            "course_id": "47",
            "title": "( )激光是世界上最亮的光。",
            "type": "1",
            "answer1": "正确",
            "answer2": "错误",
            "answer3": "",
            "answer4": "",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "33451",
            "course_id": "47",
            "title": "( )焊条是由焊芯和药皮两部分组成的。",
            "type": "1",
            "answer1": "正确",
            "answer2": "错误",
            "answer3": "",
            "answer4": "",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "33707",
            "course_id": "47",
            "title": "( )焊条按药皮熔化后的熔渣特性可分为碳钢焊条、低合金钢焊条、不锈钢焊条、堆焊焊条和铸铁焊条等。",
            "type": "1",
            "answer1": "正确",
            "answer2": "错误",
            "answer3": "",
            "answer4": "",
            "answer5": "",
            "content": "",
            "result": "2"
        },
        {
            "answer_id": "33453",
            "course_id": "47",
            "title": "( )焊接作业个人防护措施重点是切实做好施焊作业场所的通风排尘及搞好焊工的个人防护。",
            "type": "1",
            "answer1": "正确",
            "answer2": "错误",
            "answer3": "",
            "answer4": "",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "33709",
            "course_id": "47",
            "title": "( )断弧焊采取的坡口钝边间隙比连弧焊稍小，选用的焊接电流范围也较窄。",
            "type": "1",
            "answer1": "正确",
            "answer2": "错误",
            "answer3": "",
            "answer4": "",
            "answer5": "",
            "content": "",
            "result": "2"
        },
        {
            "answer_id": "33455",
            "course_id": "47",
            "title": "( )JB4708－2000规定碳素钢、奥氏体钢单面焊的焊接接头弯曲角合格标准为180°。",
            "type": "1",
            "answer1": "正确",
            "answer2": "错误",
            "answer3": "",
            "answer4": "",
            "answer5": "",
            "content": "",
            "result": "2"
        },
        {
            "answer_id": "33711",
            "course_id": "47",
            "title": "( )闪光对焊机周围10m内应无易燃易爆物品。",
            "type": "1",
            "answer1": "正确",
            "answer2": "错误",
            "answer3": "",
            "answer4": "",
            "answer5": "",
            "content": "",
            "result": "2"
        },
        {
            "answer_id": "33457",
            "course_id": "47",
            "title": "( )气割法兰时，应先割外圆，后割内圆注意支持物不要在割线下方。",
            "type": "1",
            "answer1": "正确",
            "answer2": "错误",
            "answer3": "",
            "answer4": "",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "33713",
            "course_id": "47",
            "title": "( )氦、氖、氩等稀有气体的分子是由双原子组成的。",
            "type": "1",
            "answer1": "正确",
            "answer2": "错误",
            "answer3": "",
            "answer4": "",
            "answer5": "",
            "content": "",
            "result": "2"
        },
        {
            "answer_id": "33459",
            "course_id": "47",
            "title": "( )选择焊接电流时，要考虑的因素很多，但主要由焊件厚度、焊接电源种类、电弧电压及焊条类型来决定。",
            "type": "1",
            "answer1": "正确",
            "answer2": "错误",
            "answer3": "",
            "answer4": "",
            "answer5": "",
            "content": "",
            "result": "2"
        },
        {
            "answer_id": "33715",
            "course_id": "47",
            "title": "( )焊接线能量越小，相应焊接变形越大。",
            "type": "1",
            "answer1": "正确",
            "answer2": "错误",
            "answer3": "",
            "answer4": "",
            "answer5": "",
            "content": "",
            "result": "2"
        },
        {
            "answer_id": "33461",
            "course_id": "47",
            "title": "( )交流正弦波弧焊变压器由变压器、调节装置和指示装置等组成。",
            "type": "1",
            "answer1": "正确",
            "answer2": "错误",
            "answer3": "",
            "answer4": "",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "33717",
            "course_id": "47",
            "title": "( )等离子切割割口质量主要以割口宽度、割口垂直度、割口表面粗糙度、割纹深度、割口底部熔瘤及割口热影响区硬度和宽度来评定。",
            "type": "1",
            "answer1": "正确",
            "answer2": "错误",
            "answer3": "",
            "answer4": "",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "33463",
            "course_id": "47",
            "title": "( )开坡口能起到调节基本金属与填充金属的比例作用。",
            "type": "1",
            "answer1": "正确",
            "answer2": "错误",
            "answer3": "",
            "answer4": "",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "33719",
            "course_id": "47",
            "title": "( )为了防止烧穿，不用留根部间隙。",
            "type": "1",
            "answer1": "正确",
            "answer2": "错误",
            "answer3": "",
            "answer4": "",
            "answer5": "",
            "content": "",
            "result": "2"
        },
        {
            "answer_id": "33465",
            "course_id": "47",
            "title": "( )在直流电弧焊时，由于在电弧两侧磁场强度不同，电弧受到电弧吹力的作用而偏向一边，这种现象叫做磁偏吹。",
            "type": "1",
            "answer1": "正确",
            "answer2": "错误",
            "answer3": "",
            "answer4": "",
            "answer5": "",
            "content": "",
            "result": "2"
        },
        {
            "answer_id": "33721",
            "course_id": "47",
            "title": "( )数字化弧焊逆变电源是一种采用晶体管技术完成对弧焊工艺过程的闭环控制的逆变式弧焊电源。",
            "type": "1",
            "answer1": "正确",
            "answer2": "错误",
            "answer3": "",
            "answer4": "",
            "answer5": "",
            "content": "",
            "result": "2"
        },
        {
            "answer_id": "33467",
            "course_id": "47",
            "title": "( )焊接工作中可以不依工艺文件进行。",
            "type": "1",
            "answer1": "正确",
            "answer2": "错误",
            "answer3": "",
            "answer4": "",
            "answer5": "",
            "content": "",
            "result": "2"
        },
        {
            "answer_id": "33723",
            "course_id": "47",
            "title": "( )划线是指根据图纸和实物的要求，在毛坯或半成品上以及在被加工的材料上，划出加工界线、加工图形的过程。",
            "type": "1",
            "answer1": "正确",
            "answer2": "错误",
            "answer3": "",
            "answer4": "",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "33469",
            "course_id": "47",
            "title": "( )单位名称在焊接指导书中可以不予体现。",
            "type": "1",
            "answer1": "正确",
            "answer2": "错误",
            "answer3": "",
            "answer4": "",
            "answer5": "",
            "content": "",
            "result": "2"
        },
        {
            "answer_id": "33725",
            "course_id": "47",
            "title": "( )进行焊接工作时，要求每个焊工作业面积不小于4m2。",
            "type": "1",
            "answer1": "正确",
            "answer2": "错误",
            "answer3": "",
            "answer4": "",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "33471",
            "course_id": "47",
            "title": "( )载流线圈产生磁场的方向确定，可以用右手四指弯曲与线圈中电流方向相反，并将拇指竖起，其所指的方向就是载流线圈中磁场的方向。",
            "type": "1",
            "answer1": "正确",
            "answer2": "错误",
            "answer3": "",
            "answer4": "",
            "answer5": "",
            "content": "",
            "result": "2"
        },
        {
            "answer_id": "33727",
            "course_id": "47",
            "title": "( )常用的热处理方法有淬火、回火、调质、正火四种。",
            "type": "1",
            "answer1": "正确",
            "answer2": "错误",
            "answer3": "",
            "answer4": "",
            "answer5": "",
            "content": "",
            "result": "2"
        },
        {
            "answer_id": "33473",
            "course_id": "47",
            "title": "( )珠光体耐热钢主要是以铬、镍为基础的具有高温强度和抗氧化性的低合金钢。",
            "type": "1",
            "answer1": "正确",
            "answer2": "错误",
            "answer3": "",
            "answer4": "",
            "answer5": "",
            "content": "",
            "result": "2"
        },
        {
            "answer_id": "33729",
            "course_id": "47",
            "title": "( )钢板对接立焊进行焊缝填充时，焊条与板件的下倾角为70～80°。",
            "type": "1",
            "answer1": "正确",
            "answer2": "错误",
            "answer3": "",
            "answer4": "",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "33475",
            "course_id": "47",
            "title": "( )力学性能是指金属在外力作用时表现出来的性能。",
            "type": "1",
            "answer1": "正确",
            "answer2": "错误",
            "answer3": "",
            "answer4": "",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "33731",
            "course_id": "47",
            "title": "( )焊接时，焊条作摆动的目的是：控制熔化金属的流动和得到必要的焊缝宽度。",
            "type": "1",
            "answer1": "正确",
            "answer2": "错误",
            "answer3": "",
            "answer4": "",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "33477",
            "course_id": "47",
            "title": "( )职业道德是社会主义道德体系的重要组成部分。",
            "type": "1",
            "answer1": "正确",
            "answer2": "错误",
            "answer3": "",
            "answer4": "",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "33733",
            "course_id": "47",
            "title": "( )磁场内某点的方向是以磁针在该点其N极所指的方向为磁场的正方向。",
            "type": "1",
            "answer1": "正确",
            "answer2": "错误",
            "answer3": "",
            "answer4": "",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "33479",
            "course_id": "47",
            "title": "( )锅炉压力容器压力管道焊工合格证（合格项目）有效期为2年。",
            "type": "1",
            "answer1": "正确",
            "answer2": "错误",
            "answer3": "",
            "answer4": "",
            "answer5": "",
            "content": "",
            "result": "2"
        },
        {
            "answer_id": "33735",
            "course_id": "47",
            "title": "( )埋弧焊是采用熔渣和气体联合保护的明弧焊接方法。",
            "type": "1",
            "answer1": "正确",
            "answer2": "错误",
            "answer3": "",
            "answer4": "",
            "answer5": "",
            "content": "",
            "result": "2"
        },
        {
            "answer_id": "33481",
            "course_id": "47",
            "title": "( )全面质量管理就是一个组织以质量为中心，以全员参与为基础，目的在于通过让顾客满意和本组织所有成员及社会受益而达到长期成功的管理途径。",
            "type": "1",
            "answer1": "正确",
            "answer2": "错误",
            "answer3": "",
            "answer4": "",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "33737",
            "course_id": "47",
            "title": "( )H08MnA焊丝是碳素钢焊丝。",
            "type": "1",
            "answer1": "正确",
            "answer2": "错误",
            "answer3": "",
            "answer4": "",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "33483",
            "course_id": "47",
            "title": "( )办事公道要始终以国家、人民的利益为最高原则，以社会主义事业利益为最高原则，不徇私情，不谋私利，维护国家、人民的利益。",
            "type": "1",
            "answer1": "正确",
            "answer2": "错误",
            "answer3": "",
            "answer4": "",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "33739",
            "course_id": "47",
            "title": "( )皮肤受到激光的照射会造成烧伤。",
            "type": "1",
            "answer1": "正确",
            "answer2": "错误",
            "answer3": "",
            "answer4": "",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "33485",
            "course_id": "47",
            "title": "( )当埋弧焊机发生电器部分故障时，焊工应立即切断电源，即使通知电工修理。",
            "type": "1",
            "answer1": "正确",
            "answer2": "错误",
            "answer3": "",
            "answer4": "",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "33741",
            "course_id": "47",
            "title": "( )从宏观角度看，物质是由不同的分子组成的。",
            "type": "1",
            "answer1": "正确",
            "answer2": "错误",
            "answer3": "",
            "answer4": "",
            "answer5": "",
            "content": "",
            "result": "2"
        },
        {
            "answer_id": "33487",
            "course_id": "47",
            "title": "( )化学方程式是用原子式来表示化学反应的式子。",
            "type": "1",
            "answer1": "正确",
            "answer2": "错误",
            "answer3": "",
            "answer4": "",
            "answer5": "",
            "content": "",
            "result": "2"
        },
        {
            "answer_id": "33743",
            "course_id": "47",
            "title": "( )常见的剖视图有点剖视图、线剖视图和面剖视图。",
            "type": "1",
            "answer1": "正确",
            "answer2": "错误",
            "answer3": "",
            "answer4": "",
            "answer5": "",
            "content": "",
            "result": "2"
        },
        {
            "answer_id": "33489",
            "course_id": "47",
            "title": "( )角钢的直截就是切割面垂直于角钢的切割。",
            "type": "1",
            "answer1": "正确",
            "answer2": "错误",
            "answer3": "",
            "answer4": "",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "33745",
            "course_id": "47",
            "title": "( )分子式表示该种物质的一个原子。",
            "type": "1",
            "answer1": "正确",
            "answer2": "错误",
            "answer3": "",
            "answer4": "",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "33491",
            "course_id": "47",
            "title": "( )激光功率与板厚的比值与切割速度呈正比。",
            "type": "1",
            "answer1": "正确",
            "answer2": "错误",
            "answer3": "",
            "answer4": "",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "33747",
            "course_id": "47",
            "title": "( )使用中心投影法可以获得物体的真实形状。",
            "type": "1",
            "answer1": "正确",
            "answer2": "错误",
            "answer3": "",
            "answer4": "",
            "answer5": "",
            "content": "",
            "result": "2"
        },
        {
            "answer_id": "33493",
            "course_id": "47",
            "title": "( )当管子水平固定不动时，气割应从底部开始，沿圆周分成两半完成。",
            "type": "1",
            "answer1": "正确",
            "answer2": "错误",
            "answer3": "",
            "answer4": "",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "33749",
            "course_id": "47",
            "title": "( )合金钢中，合金元素的质量分数的总和大于5%的钢称为高合金钢。",
            "type": "1",
            "answer1": "正确",
            "answer2": "错误",
            "answer3": "",
            "answer4": "",
            "answer5": "",
            "content": "",
            "result": "2"
        },
        {
            "answer_id": "33495",
            "course_id": "47",
            "title": "( )职业道德首先要从诚实守信、办事公道的职业行为规范开始。",
            "type": "1",
            "answer1": "正确",
            "answer2": "错误",
            "answer3": "",
            "answer4": "",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "33751",
            "course_id": "47",
            "title": "( )道德一种社会行为方式，是人们共同生活及其行为的准则与规范。",
            "type": "1",
            "answer1": "正确",
            "answer2": "错误",
            "answer3": "",
            "answer4": "",
            "answer5": "",
            "content": "",
            "result": "2"
        },
        {
            "answer_id": "33497",
            "course_id": "47",
            "title": "( )刚性大的焊件焊后变形一般都比较大。",
            "type": "1",
            "answer1": "正确",
            "answer2": "错误",
            "answer3": "",
            "answer4": "",
            "answer5": "",
            "content": "",
            "result": "2"
        },
        {
            "answer_id": "33753",
            "course_id": "47",
            "title": "( )非金属具有良好的导电性和导热性。",
            "type": "1",
            "answer1": "正确",
            "answer2": "错误",
            "answer3": "",
            "answer4": "",
            "answer5": "",
            "content": "",
            "result": "2"
        },
        {
            "answer_id": "33499",
            "course_id": "47",
            "title": "( )焊接弧光的红外线辐射会造成对眼睛的损害，有可能引起白内障。在未适当保护下的眼睛，长期慢性小剂量暴露于红外线，也可能发生调视机能减退，发生早期花眼。",
            "type": "1",
            "answer1": "正确",
            "answer2": "错误",
            "answer3": "",
            "answer4": "",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "33755",
            "course_id": "47",
            "title": "( )磁场对电流作用力的方向可以用左手法则来确定。",
            "type": "1",
            "answer1": "正确",
            "answer2": "错误",
            "answer3": "",
            "answer4": "",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "33501",
            "course_id": "47",
            "title": "( )因酸性焊条烘干的温度低所以可以多次反复进行烘干。",
            "type": "1",
            "answer1": "正确",
            "answer2": "错误",
            "answer3": "",
            "answer4": "",
            "answer5": "",
            "content": "",
            "result": "2"
        },
        {
            "answer_id": "33757",
            "course_id": "47",
            "title": "( )调质处理是指某些合金钢在正火后再进行高温回火的连续热处理工艺。",
            "type": "1",
            "answer1": "正确",
            "answer2": "错误",
            "answer3": "",
            "answer4": "",
            "answer5": "",
            "content": "",
            "result": "2"
        },
        {
            "answer_id": "33503",
            "course_id": "47",
            "title": "( )低合金钢焊剂的型号分类是根据焊缝金属的力学性能和焊剂渣系划分的。",
            "type": "1",
            "answer1": "正确",
            "answer2": "错误",
            "answer3": "",
            "answer4": "",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "33759",
            "course_id": "47",
            "title": "( )氧化反应必须是由氧气或氧元素参加的反应。",
            "type": "1",
            "answer1": "正确",
            "answer2": "错误",
            "answer3": "",
            "answer4": "",
            "answer5": "",
            "content": "",
            "result": "2"
        },
        {
            "answer_id": "33505",
            "course_id": "47",
            "title": "( )激光切割时，当功率一定时，切割氧气压力的最佳值随板厚的增加而减少。",
            "type": "1",
            "answer1": "正确",
            "answer2": "错误",
            "answer3": "",
            "answer4": "",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "33761",
            "course_id": "47",
            "title": "( )凡电流的方向变化而大小不随时间变化叫脉动直流电流。",
            "type": "1",
            "answer1": "正确",
            "answer2": "错误",
            "answer3": "",
            "answer4": "",
            "answer5": "",
            "content": "",
            "result": "2"
        },
        {
            "answer_id": "33507",
            "course_id": "47",
            "title": "( )质量管理包括质量保证和质量检验两方面的内容。",
            "type": "1",
            "answer1": "正确",
            "answer2": "错误",
            "answer3": "",
            "answer4": "",
            "answer5": "",
            "content": "",
            "result": "2"
        },
        {
            "answer_id": "33763",
            "course_id": "47",
            "title": "( )弧焊整流器是一种将直流电经变压、整流转换成交流电的焊接电源。",
            "type": "1",
            "answer1": "正确",
            "answer2": "错误",
            "answer3": "",
            "answer4": "",
            "answer5": "",
            "content": "",
            "result": "2"
        },
        {
            "answer_id": "33509",
            "course_id": "47",
            "title": "( )焊件内部由于受热不均匀、温度差异所引起的应力称为拘束应力。",
            "type": "1",
            "answer1": "正确",
            "answer2": "错误",
            "answer3": "",
            "answer4": "",
            "answer5": "",
            "content": "",
            "result": "2"
        },
        {
            "answer_id": "33765",
            "course_id": "47",
            "title": "( )大直径圆钢与大尺寸方钢切割时，由于尺寸超过割炬的切割能力，整个割口不能一次完成，必须通过改变切割方向，才能达到割透的目的。",
            "type": "1",
            "answer1": "正确",
            "answer2": "错误",
            "answer3": "",
            "answer4": "",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "33511",
            "course_id": "47",
            "title": "( )焊接从业人员只需做好自己分内工作，不必关心其它。",
            "type": "1",
            "answer1": "正确",
            "answer2": "错误",
            "answer3": "",
            "answer4": "",
            "answer5": "",
            "content": "",
            "result": "2"
        },
        {
            "answer_id": "33767",
            "course_id": "47",
            "title": "( )创新是企事业持续、健康发展的巨大动力。",
            "type": "1",
            "answer1": "正确",
            "answer2": "错误",
            "answer3": "",
            "answer4": "",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "33513",
            "course_id": "47",
            "title": "( )当切割直径较大的法兰时，中间的余料还可能制作小法兰，此时则只能在割线上起割，割炬的倾斜方向只能向割线方向倾斜。",
            "type": "1",
            "answer1": "正确",
            "answer2": "错误",
            "answer3": "",
            "answer4": "",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "33769",
            "course_id": "47",
            "title": "( )焊条的牌号是对焊条不同种类的另一种表示方法，其和焊条型号完全不同。",
            "type": "1",
            "answer1": "正确",
            "answer2": "错误",
            "answer3": "",
            "answer4": "",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "33515",
            "course_id": "47",
            "title": "( )在元素周期表中，同周期元素从左到右，金属性逐渐增强，非金属性逐渐减弱，最后以稀有元素结尾。",
            "type": "1",
            "answer1": "正确",
            "answer2": "错误",
            "answer3": "",
            "answer4": "",
            "answer5": "",
            "content": "",
            "result": "2"
        },
        {
            "answer_id": "33771",
            "course_id": "47",
            "title": "( )焊接工作人员只需做好焊接工作，不用理会其他工作。",
            "type": "1",
            "answer1": "正确",
            "answer2": "错误",
            "answer3": "",
            "answer4": "",
            "answer5": "",
            "content": "",
            "result": "2"
        },
        {
            "answer_id": "33517",
            "course_id": "47",
            "title": "( )道德和法律的相同之处都是人们的一种社会行为规范。",
            "type": "1",
            "answer1": "正确",
            "answer2": "错误",
            "answer3": "",
            "answer4": "",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "33773",
            "course_id": "47",
            "title": "( )铜及铜合金焊丝分成紫铜丝、黄铜丝、白铜丝及青铜丝几大类。",
            "type": "1",
            "answer1": "正确",
            "answer2": "错误",
            "answer3": "",
            "answer4": "",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "33519",
            "course_id": "47",
            "title": "( )磁偏吹是指电弧受磁力作用而发生偏斜的现象。",
            "type": "1",
            "answer1": "正确",
            "answer2": "错误",
            "answer3": "",
            "answer4": "",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "33775",
            "course_id": "47",
            "title": "( )激光氧气切割所需功率比激光熔化切割小得多。",
            "type": "1",
            "answer1": "正确",
            "answer2": "错误",
            "answer3": "",
            "answer4": "",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "33521",
            "course_id": "47",
            "title": "( )激光割炬的位置传感器有机械接触式、电容式、电感式等数种。",
            "type": "1",
            "answer1": "正确",
            "answer2": "错误",
            "answer3": "",
            "answer4": "",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "33777",
            "course_id": "47",
            "title": "( )焊接人员在封闭环境中作业时应特别注意通风系统的畅通。",
            "type": "1",
            "answer1": "正确",
            "answer2": "错误",
            "answer3": "",
            "answer4": "",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "33523",
            "course_id": "47",
            "title": "( )铁素体的强度和硬度高，而且塑性和韧性很好。",
            "type": "1",
            "answer1": "正确",
            "answer2": "错误",
            "answer3": "",
            "answer4": "",
            "answer5": "",
            "content": "",
            "result": "2"
        },
        {
            "answer_id": "33779",
            "course_id": "47",
            "title": "( )焊条偏心对焊接质量没有太大的影响，可以随便使用。",
            "type": "1",
            "answer1": "正确",
            "answer2": "错误",
            "answer3": "",
            "answer4": "",
            "answer5": "",
            "content": "",
            "result": "2"
        },
        {
            "answer_id": "33525",
            "course_id": "47",
            "title": "( )E308MoT0-3是不锈钢药芯焊丝。",
            "type": "1",
            "answer1": "正确",
            "answer2": "错误",
            "answer3": "",
            "answer4": "",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "33781",
            "course_id": "47",
            "title": "( )材料的冲击韧度与材料所处的温度无关。",
            "type": "1",
            "answer1": "正确",
            "answer2": "错误",
            "answer3": "",
            "answer4": "",
            "answer5": "",
            "content": "",
            "result": "2"
        },
        {
            "answer_id": "33527",
            "course_id": "47",
            "title": "( )晶闸管弧焊整流器是利用晶闸管元件组代替磁饱和电抗器和二极管整流器实现的。",
            "type": "1",
            "answer1": "正确",
            "answer2": "错误",
            "answer3": "",
            "answer4": "",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "33783",
            "course_id": "47",
            "title": "( )焊接过程中在焊接接头中产生的金属不连续、不致密或连接不良的现象称为焊接缺陷。",
            "type": "1",
            "answer1": "正确",
            "answer2": "错误",
            "answer3": "",
            "answer4": "",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "33529",
            "course_id": "47",
            "title": "( )电子在原子内作高速运动，其运动有确定的轨道。",
            "type": "1",
            "answer1": "正确",
            "answer2": "错误",
            "answer3": "",
            "answer4": "",
            "answer5": "",
            "content": "",
            "result": "2"
        },
        {
            "answer_id": "33785",
            "course_id": "47",
            "title": "( )激光器按照能量输出方式可分为：脉冲激光器和连续激光器。",
            "type": "1",
            "answer1": "正确",
            "answer2": "错误",
            "answer3": "",
            "answer4": "",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "33531",
            "course_id": "47",
            "title": "( )焊接过程中产生的化学有害因素包括焊接烟尘、有害气体和放射线等。",
            "type": "1",
            "answer1": "正确",
            "answer2": "错误",
            "answer3": "",
            "answer4": "",
            "answer5": "",
            "content": "",
            "result": "2"
        },
        {
            "answer_id": "33787",
            "course_id": "47",
            "title": "( )焊缝外观检查是一项重要的质量评定方法，也是焊工消除缺陷的先决措施。",
            "type": "1",
            "answer1": "正确",
            "answer2": "错误",
            "answer3": "",
            "answer4": "",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "33533",
            "course_id": "47",
            "title": "( )低合金钢药芯焊丝是完全按照焊接位置来分类的。",
            "type": "1",
            "answer1": "正确",
            "answer2": "错误",
            "answer3": "",
            "answer4": "",
            "answer5": "",
            "content": "",
            "result": "2"
        },
        {
            "answer_id": "33789",
            "course_id": "47",
            "title": "( )等离子弧切割割枪一般由电极、电极夹头、喷嘴、冷却水套、中间绝缘体、气室、水路、气路、馈电体等组成。",
            "type": "1",
            "answer1": "正确",
            "answer2": "错误",
            "answer3": "",
            "answer4": "",
            "answer5": "",
            "content": "",
            "result": "1"
        },
        {
            "answer_id": "33535",
            "course_id": "47",
            "title": "( )铜的元素符号是Ca。",
            "type": "1",
            "answer1": "正确",
            "answer2": "错误",
            "answer3": "",
            "answer4": "",
            "answer5": "",
            "content": "",
            "result": "2"
        },
        {
            "answer_id": "33791",
            "course_id": "47",
            "title": "( )创新是是个人事业获得成功的关键因素。",
            "type": "1",
            "answer1": "正确",
            "answer2": "错误",
            "answer3": "",
            "answer4": "",
            "answer5": "",
            "content": "",
            "result": "1"
        }
    ]
}