问题 问答题 简答题

简述掘进工作面发生爆炸时安全注意事项。

答案

参考答案:

1.在确认无火源时,应尽快恢复局部通风机通风,以便于抢救灾区人员和排除爆炸产生的有害气体;如不能明确有无火源,应慎重考虑是否启动局部通风机,以免再次爆炸。

2.当独头巷道较长,有害气体较多,支架损坏较严重,如果确认灾区内无火源和幸存者,严禁冒险进入,强行救人。要在恢复通风,维护好支架后,方可进入灾区营救人员。

3.若掘进工作面因爆炸引起冒顶堵塞巷道时,要立即退出,寻找其他巷道进入灾区。如果是独头巷道,必须维护好支架,清理堵塞物。若短时间内不能疏通巷道,应恢复通风再进入冒顶堵塞巷道。

4.当爆炸后仍有火源时,应同时救人和灭火,并派人专门监测瓦斯浓度户,防止再次发生瓦斯爆炸。

5.发生爆炸事故时,会大量消耗掘进工作面的氧气,导致氧气浓度降低,同时使一氧化碳浓度增加,现场人员在撤离灾区时必须佩戴自救器。

完形填空

We have completed our first month of preschool .Matthew seems to  36 it ,He is catching on to the routine (常规)quite nicely .I didn’t leave him there   37  much the first couple weeks ,I am finding if I’m not there he behaves much better .

In this class a little German boy ,who does not speak  38  ,cried all the time at first and nor cries occasionally.

The Monday of the second week the little fellow just cried and cried .he was sitting  39    Matthew ,I thought Matthew was going to start  40  and join in ,I stood by and watched ,ready for the rescue ,Matthew kept turning around and  41  the boy ,Then he reached his hand back and   42  him on the leg .He was comforting the boy! Later Matthew was playing with a  43 and the boy with blocks (积木),actually he was just standing by and crying .Matthew drove his truck over to the blocks  , 44  it ,picked up a few of the blocks and started handing them to  45 .They then together started  46  towers on the table and the little boy  47  crying ,It seemed  48   Matthew knew what the little guy needed ,Here was the little guy ,who can’t speak English ,and Matthew ,who 49  playing together ,like they were best 50   .

One of the days when I stayed ,they were at lunch and Matthew was  51   at the table ,I pulled up a chair to sit next to him ,He smiled ,then grabbed his book bag and took off running  52   the cafeteria ,I took off after him ,When we reached the wall he wall he just giggled (咯咯笑),turned around and looked at me ,I leaned down to his  53  to blame him for leaving his seat and running ,He suddenly  54  a big wet kiss right on my lips and smiled at me ,All I could do was to take his hand and  55  him back to his seat ,Then I turned my back and couldn’t help laughing.

36. A.escape               B.hate            C.enjoy         D.avoid

37. A.out           B.in              C.off       D.alone

38. A.Spanish      B.English      C.Chinese         D.Japanese

39. A.behind      B.beside         C.in front of             D.far from

40. A.over again    B.any moment   C.even harder         D.loudly

41. A.beating            B.shouting at    C.looking at            D.learning from

42. A.helped         B.hit        C.held                D.patted

43. A.toy             B.doll            C.truck                 D.train

44. A.parked     B.repaired      C.broke              D.threw

45. A.me             B.the teacher   C.himself               D.the little boy

46. A.adding       B.climbing         C.building         D.putting

47. A.continued     B.enjoyed        C.began               D.stopped

48. A.where       B.as             C.when                D.as if

49.   A.signs     B.starts               C.teaches         D.learns

50.   A.brothers      B.children      C.friends               D.people

51.   A.standing      B.running       C.sitting                D.jumping

52.   A.across       B.into          C.out of               D.through

53.   A.table         B.level      C.hand            D.back

54.   A.planted       B.received         C.made        D.had

55.   A.force     B.walk            C.push            D.drive

单项选择题