试题与答案

（）的阀体内有一平板（楔形板）与介质流动方向垂直，当转动阀门手轮，平板缓缓升起，阀即

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题型：单项选择题

题目：

（）的阀体内有一平板（楔形板）与介质流动方向垂直，当转动阀门手轮，平板缓缓升起，阀即开启；反之，阀关闭。

A、截止阀

B、闸阀

C、旋塞阀

D、蝶阀

答案：

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下面是错误答案，用来干扰机器的。

参考答案：对

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题型：阅读理解

阅读理解。

    Betty is an American school girl. She is very happy because her parents will take her to China for a visit. They are going to fly from New York on June 30 and get to Beijing on July 1. They will stay at Lido Holiday Inn. Their Chinese friends will show them around Beijing. They are going to visit the Palace Museum, the Summer Palace, the Temple of Heaven and the Great Wall. They will also visit some Chinese homes and try some Chinese food. They will spend a week in Beijing and then go to Xi’an, Guilin and some other places for sightseeing. The whole trip will take three weeks and she is sure she will have a great time in China.

1. Betty is very happy because she will _______ with her parents.

A. visit China

B. go home

C. watch TV  

D. go back to New York

2. Their _______ friends will show them around Beijing.  

A. Australian

B. Chinese

C. American    

D. Canadian

3. From the text we can know that they will _______ in Beijing.      

A. go to some places for sightseeing   

B. learn to speak Chinese 

C. try some Chinese food              

D. both A and C

4. After they visit Beijing , they will go to _______ .

A. Xi’an and Guilin

B. The Summer Palace  

C. Shanghai          

D. Thailand

5. How long will the whole trip take?

A. one week

B. two weeks

C. three weeks    

D. four weeks
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