http://www.esafety.cn/blog/wll/66030/index.html

《安全生技术》考前练习(46)

作者[孙锡云] 发表于[2011-9-2 10:56:00]

《安全生技术》考前练习(46

  1.锅炉蒸发表面汽水共同升起,产生大量泡沫并上下波动翻腾的现象,叫汽水共腾。形成汽水共腾的原因有两个方面是(  )。
  A.省煤器管子爆破漏水,给水设备或给水管路故障
  B.锅炉缺水,受热面管子过热或过烧
  C.锅炉满水,水位表故障造成假水位
  D.锅水品质差,负荷增加或压力降低过快

  2.烘炉是在锅炉炉膛中用文火缓慢加热的工艺过程。烘炉应该在锅炉 进行,其目的是防止炉墙产生(  ),甚至发生倒塌事故。
  A.上水前,裂纹变形
  B.上水后,裂纹变形
  C.上水前,炉膛爆炸
  D.上水后,炉膛爆炸

  3.锅炉严重缺水时,必须紧急停炉,应该采取的操作行为是(  )。
  A.快速给锅炉上水
  B.开启空气阀及安全阀
  C.快速给锅内降压并更换锅水
  D.停止添加燃料和送风

  4.炉膛爆炸是指炉膛内积存的可燃性混合物瞬间爆燃,压力突然升高,超过了设计结构的允许值,造成水冷壁、刚性梁及炉顶、炉墙破坏的现象,即正压爆炸。炉膛爆炸的3个条件,一是(  ),二是燃料和空气的混合物达到爆燃的浓度,三是有足够的点火能源,三者缺一不可。
  A.燃料以固态积存在炉膛中  
  B.燃料以液态积存在炉膛中  
  C.燃料以气态积存在炉膛中  
  D.前三种之中的燃料任意状态

  5.锅炉点火前,打开引风机通风是为了(  )。
  A.检查风机的完好状态
  B.吹扫炉内惰性气体
  C.驱除炉膛和烟道内的可燃物
  D.降低炉膛和烟道的温度

  6.防止锅炉尾部烟道二次燃烧的措施有:提高燃烧效率减少不完全燃烧、减少锅炉的启停次数、加强尾部受热面的吹灰等,采取这些措施的主要目的是为防止(  )。
  A.可燃物随烟气在尾部烟道积存
  B.尾部烟道的压力过大  
  C.尾部烟道的气流速度过慢
  D.尾部烟道气体产生紊流

  7.锅炉的水质如果不进行处理,其较严重的危害是(  )。
  A.形成水垢、发生汽水共腾事故
  B.烟气爆炸、烟道尾部二次燃烧
  C.发生满水或缺水事故
  D.引发炉膛爆炸

  8.对运行中的压力容器进行设备安全检查的项目,不包括(  )。
  A.检查工艺条件
  B.设备状况
  C.安全装置
  D.相关人员的操作技能

  9.永久气体气瓶充装量,控制在气瓶内气体的压力在基准温度(  )下且不超过其公称工作压力;在最高使用温度 下应不超过气瓶的许用压力。
  A1050
  B2060
  C3070
  D4080

  10.气瓶应专用,如确实需要改装其他气体,改装工作应由气瓶的(  )单位进行。
  A.使用
  B.制造
  C.检验
  D.充装

  答案:1D  2B  3D  4C  5C  6A  7A  8D  9B  10C

  • 标签:安全技术 注安试题 
  • 圈子:注安之家 
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    Re:在漫画中识别身边的违章

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    原创

    作者[原创(游客)] 发表于[2016-9-30 10:36:18]
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    原创

    作者[原创(游客)] 发表于[2016-9-28 16:01:13]
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    Re:在漫画中识别身边的违章

    作者[insuy(游客)] 发表于[2016-9-24 12:59:25]
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    原创

    作者[原创(游客)] 发表于[2016-9-6 16:27:43]
    原创(游客)http://rywhw.lofter.com/post/1e5a84f4_c3d7db2 http://rywhw.lofter.com/post/1e5a84f4_c3d7db1 http://rywhw.lofter.com/post/1e5a84f4_c3d7db0 http://rywhw.lofter.com/post/1e5a84f4_c3d7daf http://rywhw.lofter.com/post/1e5a84f4_c3d7dae http://rywhw.lofter.com/post/1e5a84f4_c3d7dad http://rywhw.lofter.com/post/1e5a84f4_c3d7dac http://rywhw.lofter.com/post/1e5a84f4_c3d7dab http://rywhw.lofter.com/post/1e5a84f4_c3d7daa http://rywhw.lofter.com/post/1e5a84f4_c3d7da9
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