问题 填空题

接头连接泄漏的原因是:接头锥面有划伤;球面活接头表面有划伤;接头体和球接头加工不合格;连接不同心;连接表面有异物或()不合适等。

答案

参考答案:紧固度

单项选择题
完形填空

第三部分:完形填空

阅读下面短文,从短文后所给各题的四个选项(A、B、C和D)中,选出可以填入空白处的最佳选项。

It was almost Christmas. We wrote to my father, asking him to  36  an artificial tree for us and   _37  it to us in several smaller boxes. Two days before Christmas we were in a  38  . All of the boxes that my father had sent us arrived except for the one with the tree  39 . We decided to wait one more day.

Meanwhile, in Bremerhaven, a young mail clerk  40  a box under a counter. He  41  that someone would be without a tree for Christmas. Although he was closing up and there was no  42_  on Christmas, he processed the mail and got it to Mannheim.

After putting the  43  on the proper shelf, he headed to the snack bar. The place was  44   and he ended up sharing a table. Two men were speaking and the clerk discovered that one of his  45  at the table was working in Mannheim. He said to the man, "You could  46  play Santa for someone in Mannheim tonight if you'd like to." The man  47  to deliver it and the two walked to the mail room to  48  the package.

At home in Mannheim, we were busily  49  to think up some way to put our tree together, but couldn't  50  a workable solution. We were ready to give up  51  the door bell rang. There stood a stranger holding a long  52  carton, our tree trunk. We invited him in,  53  it was Christmas Eve and he was  54  to get home to his own family.

The next day as we watched our little boy's eyes light up at the  55  of our beautiful tree, I whispered a little prayer: "Bless the stranger who brightened up our Christmas with his kindness."

36. A. sell             B. buy              C. deliver                 D. bring

37. A. send            B. pass               C. carry                 D. take

38. A. surprise          B. hunger             C. pleasure              D. panic

39. A. leaf            B. trunk              C. stand                D. branch

40. A. watched        B. caught             C. spotted               D. broke

41. A. directed         B. whispered           C. realized                 D. confirmed

42. A. delivery         B. customer          C. money                 D. letter

43. A. present        B. tree              C. mail                   D. package

44. A. crowded         B. small             C. noisy                  D. normal

45. A. friends          B. colleagues           C. relatives               D. companions

46. A. really           B. confidently         C. kindly                 D. patiently

47. A. overcame       B. agreed              C. astonished            D. struggled

48. A. fetch           B. transform           C. post                       D. consult

49. A. solving          B. explaining          C. trying                 D. worrying

50. A. come across      B. come back to        C. come upon             D. come up with

51. A. while             B. when              C. as                        D. since

52. A. slim            B. beautiful           C. thick                 D. heavy

53. A. but               B. so                  C. because                D. or

54. A. in surprise       B. it, the, way         C. in a hurt7              D. in lime

55. A. sight            B. back             C. corner                  D. scene