问题 问答题 简答题

校验锅炉安全门应遵循的基本原则有那些?

答案

参考答案:

1.锅炉大修后,或安全阀解体检修后,均应对安全阀定值进行校验。

2.带电磁力辅助操作机械的电磁安全阀,除了进行机械校验外,还应做电气回路的启停试验。

3.纯机械弹簧安全阀可采用液压装置进行校验。

4.安全阀校验的顺序,应先高压,后低压,先主蒸汽侧,后进行再热蒸汽侧,依此对汽包、过热器出口,再热器进、出口安全阀逐一进行校验。

5.安全阀校验,一般应在汽轮发电机未启动前或解列后进行。

完形填空

第二节完形填空(共20小题;每小题1.5分,满分30分)

阅读下面短文,从短文后各题所给的四个选项(A、B、C和D)中,选出可以填入空白处的最佳选项,并在答题卡上将该项涂黑。

James’s  New  Bicycle

James shook his money box again. Nothing! He carefully   36   the coins that lay on the bed.$24.52 were all that he had.The bicycle he wanted was at least $90!   37   on earth was he going to get the   38   of the money?

He knew that his friends all had bicycles. It was   39   to hang around with people when you were the only one without wheels. He thought about what he could do. There was no   40   asking his parents, for he knew they had no money to   41  

There was only one way to get money, and that was to   42   it. He would have to find a job. 43 who would hire him and what could he do? He decided to ask Mr. Clay for advice, who usually had   44 on most things.

That was the   45   of James’s odd- job(零工) business. For three months he worked every day after finishing his homework. He was amazed by the   46   of jobs that people found for him to do. He took dogs and babies for walks, cleared out cupboards, and mended books. He lost count of the   47 of cars he washed and windows he cleaned, but the   48   increased and he knew that he would soon have   49   for the bicycle he longed for.

The day   50   came when James counted his money and found $94.32. He   51   no time and went down to the shop to pick up the bicycle he wanted. He rode   52   home, looking forward to showing his new bicycle to his friends. It had been hard   53   for the money, so James knew that he valued his bicycle far more   54   he had bought it with his own money. He had  55  what he thought was impossible, and that was worth even more than the bicycle.

36. A. cleaned        B. covered             C. counted             D. checked

37. A. How            B. Why                 C. Who                 D. What

38. A. amount        B. part                  C. sum                 D. rest

39. A. brave           B. hard                  C. smart                D. unfair

40. A. point           B. reason               C. result                D. right

41. A. split            B. spend                C. spare                 D. save

42. A. borrow        B. earn                  C. raise                 D. collect

43. A. Or               B. So                    C. For                   D. But

44. A. decisions         B. experience      C. opinions        D. knowledge

45. A . beginning        B. introduction   C. requirement    D. opening

46. A. similarity   B. quality         C. suitability      D. variety

47. A. brand       B. number          C. size               D. type

48. A. effort       B. pressure            C. money           D. trouble

49. A. all            B. enough          C. much            D. some

50. A. finally      B. instantly        C. normally        D. regularly

51. A. gave         B. left                       C. took              D. wasted

52. A. patiently   B. proudly          C. silently          D. tiredly

53. A. applying   B. asking           C. looking          D. working  

54. A. since         B. if                  C. than               D. though

55. A. deserved   B. benefited        C. achieved        D. learned

判断题