问题 填空题

固定管板式换热器试压的顺序和目的如下:

1)先进行()试压,目的:()。

2)后进行()试压,目的:()。

答案

参考答案:壳程;检查换热管与管壁的连接接头,壳体强度;管程;检查管箱强度和管箱密封面

阅读理解

任务型阅读。根据短文内容,从短文后的选项中选出能填入空白处的最佳选项。选项中有一项为

多余选项。

      In choosing a friend, one should be very careful. A good friend can help you study. You can have fun

together and make each other happy. Sometimes you will meet fair weather friends. They will be with you

as long as you have money or luck, but when you are down, they will run away. 1._______ I look for certain

qualities of character, especially understanding, honesty and reliability (可靠).

      Above all else, I look for understanding in a friend. A good friend tries to understand how another person

is feeling. He is not quick to judge. Instead, he tries to learn from others. He puts himself in the other person's

place, and he tries to think of ways to be helpful. He is also a good listener. At the same time, however, a good

friend is honest. He does not look for faults in others. He notices (注意到) their good points. In short (总之), a

friend will try to understand me and accept me. 

      2._______ I can always depend on a good friend. If he tells me he will meet me somewhere at a certain

time, I can be sure that he will be there. If I need a favor (帮忙), he will do his best to help me. If I am in

trouble, he will not run away from me.

      There is a fourth quality that makes a friend special. 3._______ We should enjoy our lives, and we would

enjoy our friendship. That is why I especially like friends who are fun to be with. A good friend likes the same

things I like. We share experience and learn from each other. A good friend has a good sense of humor (幽默),

too. He likes to laugh with me. That is how we share in the joy of being friends. And I know that he is looking

for the same quality in me. 4._______

A. How do I know when I have found a good friend?

B. When I meet someone who is reliable, honest, and understanding, I know I've found a friend!

C. A special friend is someone with whom we can have fun.

D. Another quality of a friend is reliability.

E. I also want a good friend.

单项选择题