启运离心泵时应（）A、先开出口阀后开泵 B、先开泵后开出口阀 C、没关系 D、以上均

上消化道出血伴慢性、节律性、周期性上腹痛，诊断考虑为

A．消化性溃疡

B．反流性食管炎

C．急性胃粘腹病变

D．食管静脉曲张破裂

E．胆道出血

SECTION B (18 points)

Directions: For each blank in the following passage there are four words or phrases marked A, B, C and D. Fill in each blank with word or phrases that best fits the context.

There was once a lonely girl who wanted so much for love. One day while she was walking in the woods she found two starving (挨饿的) birds. She took them home and put them in a small  36 . She treated them with love and the birds grew  37 . Every morning they  38  her with a wonderful song. The girl felt great love for the birds.

One day, the girl left the door with the cage open. The  39  and stronger of the two birds flew from the cage. The girl was worried that he  40  fly away，so as he flew close, she caught him wildly. Her heart felt glad at her success in capturing (捕获) him. Suddenly she felt the bird go limp (无力的). She opened her hands  41  looked at the dead bird. Her strong love had killed him.

She noticed  42  bird moving slowly to the edge of the cage. She could feel his great need for  43 . He needed to fly into the blue sky. She lifted him from the cage and let him go. The bird  44  once, twice, three times over her head.

The girl watched happily at the sky. Her heart was no longer worried about her loss. She wanted the bird to be happy. Suddenly, the bird flew  45  and landed softly on her shoulder. He  46  the sweetest song for her that she had ever heard.

The fastest way to  47  love is to hold on to it too tight; the best way to keep love is to give it WINGS.

36. A. cage                   B. box                      C. house                   D. bag

37. A. old                     B. tall                          C. strong                      D. weak

38. A. showed         B. gave                 C. greeted                     D. followed

39. A. smaller        B. weaker                     C. taller                        D. larger

40. A. will                    B. would                     C. should                      D. must

41. A. but              B. or                     C. and                      D. so

42. A. another            B. the other               C. others                  D. some

43. A. food              B. space                   C. love                    D. freedom

44. A. walked           B. left                           C. circled                  D. ran

45. A. closer             B. away                   C. farther                        D. down

46. A. sang              B. danced                        C. flew                    D. wrote

47. A. get               B. lose                   C. remain                  D. find

初级菌丝

在数据避雷器中有两种动作类型防雷器件，一种是（），比如压敏电阻，半导体稳压管等；另一种是导通型器件，比如气体管、固体管、雪崩二极管等。

A.钳位型器件

B.导通型器件

C.线性器件

图示刚架结构用位移法计算，其结点的独立角位移和线位移未知量为（）。

A．角位移＝4；线位移＝3

B．角位移＝4；线位移＝2

C．角位移＝3；线位移＝3

D．角位移＝3；线位移＝2