【填空题】
21、当身上衣服着火时,可立即 ___ 。 
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答案
就地打滚,压灭身上火
解析
暂无解析
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22、作业现场 “四到位”指:人员到位,措施到位,执行到位,___。
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23、安全带的正确挂扣应该是 ___。 
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24、人体发生触电后,根据电流通过人体的途径和人体触及带电体方式,一般可分为单相触电、两相触电及___  。   
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25、根据《安全生产法》,从业人员的权利包括知情权、拒绝权、___  。
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26、按照我国目前的机构设置,负责特种设备安全监督管理的部门是 ___ 。 
【填空题】
27、当有异物进入眼内,应当采取的方法为___ 、反复眨眼,用眼泪将异物冲出来  。    
【填空题】
28、要做到“安全第一”,就必须实行“___”的原则 。
【填空题】
29、造成火灾蔓延的的主要因素有  热传导、___、 热对流 。
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30、火灾中产生大量有毒气体主要包括  ___ 、 二氧化碳 、 一氧化氮 和  二氧化氮 。  
【填空题】
31、凡直接从事带电作业的劳动者,必须穿 绝缘鞋,必须戴___,防止发生触电事故。    
【填空题】
32、使可燃混合物着火和开始燃烧,现实中有两种方式是点燃 和 ___ 。
【填空题】
33、煤气是由氮气、 ___、氢气、氧气 等气体组成的混合气体。
【填空题】
34、在一定压力条件下,体积与气体的温度成 ___ 比例。
【填空题】
35、物质燃烧的三要素是指有___、 助燃物和火源。
【填空题】
36、《工业企业煤气安全规程》规定,作业环境CO最高允许浓度为___。
【填空题】
37、在正常生产的煤气管道设备上动火时,要保证设备和管道内的煤气压力处于 ___ 状态。
【填空题】
38、煤气事故主要指 ___、着火、 爆炸 。
【填空题】
39、煤气设备巡检必须 ___ 以上作业。并保持安全距离。
【填空题】
40、煤气区域动火检修时,必须填写 ___ ,并设专人监护。
【填空题】
41、煤气管道吹扫完后,必须及时把___ 断开。
【填空题】
42、煤气防火的原则是防止煤气泄露、___。
【填空题】
43、煤气设备或煤气作业区附近___ 内禁止一切火源。
【填空题】
44、煤气设备再送煤气时应先做 ___ ,实验合格方能送气。
【填空题】
45、煤气设备送气前要用氮气或 ___ 置换设施内的空气。
【填空题】
46、进入煤气设备内工作所用照明一般不超过 ___ V。
【填空题】
47、在焊接或切割密封的空心件时,必须留有 出气孔,在容器内焊接时,外面 ___。
【填空题】
48、在易燃易爆物品的堆放场所或煤气管道区域作业必须得到安全部门的同意,并办理 ___ 。
【填空题】
49、参加检修、多层作业时,相关设备也要挂 双牌,禁止 ___ 。
【填空题】
50、严禁带 ___ 拆装氧气、乙炔表。
【填空题】
51、电焊机拆接电源,必须由 ___ 操作。
【填空题】
52、氧气和乙炔瓶的摆放距离必须相隔 ___ 米以上,与明火的距离必须相隔___米以上。
【填空题】
53、工作完毕后“三清”退场。“三清”是指___、___、___ 。
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54、使用灭火器扑救火灾时要对准___ 喷射。
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55、对金属进行加热,一般在温度升高时,金属的塑性可得到改善,同时变形抗力会_____。
【填空题】
56、在三相交流电路中所谓三相负载对称是指___、___、___ 。
【填空题】
57、对称三相交流电路,中性点电压等于___。
【填空题】
58、停电更换熔断器保险后,恢复操作时,应戴护目眼镜和 ___ 。
【填空题】
59、起重机是一种能在一定范围内 ___和水平移动物品的机械。
【填空题】
60、起重机运行时,若振动过大,可能导致 ___ 。
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61、钢丝绳做拉伸试验时被拉断的拉力称为钢丝绳的 ___。
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【单选题】
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【单选题】
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【单选题】
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