问题 单项选择题

停车时C125M33-2RH离心式压缩机的入口阀门应处于()状态。

A.打开

B.关闭

C.半开

答案

参考答案:B

完形填空
完形填空: 先通读下面的短文,掌握其大意,然后在每小题所给的A、B、C、D四个选项中,选出最佳选项。

     Several days ago, some students from the US visited our school. When we talked, I discovered __1__
differences in school life between the US and China. For example, each class __2__ fifty minutes in the
US. It is a little __3__ than that in China. We usually have forty of forty-five minutes in each class. Another
difference is that they have less break time between __4__. Besides, although (虽然) most schools in both
countries finish their __5__ classes at 12 o'clock, the students in the US only have an hour-long break, so
they __6__eat lunch quickly. Their afternoon classes begin at 1: 00 p.m. and school is over __7__ 3 : 00
p.m.  Then they take part in club activities or play sports.
     Many Chinese students don't work during their high school years, while the US students like to find a
part-time job in __8__ free time. They don't have a dream job in mind. They think __9__ is no difference
between jobs. Working is a useful experience for them and they can make money at the same time. Some
of them even take one-year full-time jobs __10__ they leave high school and then go to college.

( )1. A. no      
( )2. A. lasts  
( )3. A. shorter
( )4. A. schools
( )5. A. day    
( )6. A. can't  
( )7. A. in      
( )8. A. my      
( )9. A. it      
( )10. A. after  
B. few      
B. finishes  
B. longer    
B. classes  
B. night    
B. mustn't  
B. for      
B. his      
B. there    
B. with      
C. little  
C. starts  
C. earlier
C. meals  
C. morning
C. need to
C. during  
C. their  
C. that    
C. while  
D. some        
D. stays      
D. later      
D. students    
D. afternoon  
D. are able to
D. around      
D. your        
D. this        
D. during      
单项选择题