问题 单项选择题

活塞压力计的基本参数,采用活塞有效面积,而不直接活塞杆截面积,那是因为考虑()影响。

A、工作介质的质量

B、工作介质的粘滞摩擦力

C、工作介质的浮力

D、工作介质的表面张力

答案

参考答案:B

选择题
完形填空

第二节  完形填空(共10小题;每小题1分,满分10分)

阅读下面短文,掌握其大意,然后从第30至第40小题所给的A、B、C、D四个选项中,选出最佳选项,并在答题卡上将该项涂黑。

Dear Sarah,

You have every right to feel betrayed by your friend if she did tell your secrets to others, but it seems  31  that she did. You say that you are best  32 ; well, best friends talk about their  33  and try to  34  them. If she is a good friend, you should apologize for blaming her.

 35  you still have doubts, you should think about why you don’t believe her. Was it because you were ashamed of your mark  36  your behavior? Did you feel jealous of your friend’s  37 ? If so, the problem  38  with you, not her. Try not to sound too proud of  39  when discussing your marks in front of others.

However, if you feel that she is very  40  at keeping secrets and likes to embarrass you in public, you had better find a new friend.

31. A. important       B. unlikely               C. necessary             D. unfair

32. A. students           B. players                 C. friends                        D. learners

33. A. problems                B. teachers                C. questions              D. studies

34. A. love               B. solve                    C. find                    D. help

35. A. As                  B. While                  C. Because                D. If

36. A. or                   B. and                      C. with                     D. along with

37. A. clothes            B. family                  C. parents                 D. marks

38. A. goes                B. fights                   C. deals                    D. lies

39. A. you                B. yourself                       C. them                    D. themselves

40. A. good               B. clever                  C. bad                      D. expert