问题 单项选择题

关于热力站内的凝水箱,以下说法错误的是( )。

A.总储水量可按20~30min最大凝结水量考虑
B.全年工作的凝水箱宜设两个,每个容积为50%
C.当凝水箱季节工作,且凝结水量在5t/h以下,可设一个凝水箱
D.蒸汽热网用户宜采用闭式凝结水回收系统,站内设闭式凝水箱

答案

参考答案:A

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       Ava was ill. She went to see a doctor. The doctor asked her to   1   her tongue (舌头), and then he
said,"OK. You can put your tongue back now. There's   2   wrong with you, but I'm afraid you have a
problem: you never take   3  ."
       "But, doctor,"Ava said,"I don't think so."
       "Don't   4   me what you think,"the doctor said,"I see a lot of people   5   you. None of them get any
exercise. They sit in offices all day and in front of the TV in the evening. You must walk quickly for at least
20 minutes a day."
       "Doctor, you don't understand."Ava said,"I take enough exercise every day."
       "I don't want to   6   any excuses," the doctor said, "You must find time   7   exercise. If you don't, you will get   8   and have health problems."
       "But I walk every day."Ava said.
       "Oh, yes, and I know what kind of walking that is. You walk   9   meters to the bus stop from your
house, from the bus stop to your office, and from your office to your dining-room for lunch and back. That's not a real walk. I'm talking about a walk by the lake or in the park for 20 minutes every day."
       "Would you please   10   me, doctor?"Ava said,"I'm a postwoman. I walk for nearly seven hours every day."
       For a moment the doctor was silent, then he said,"Can I see your tongue again?"
( )1. A. put away
( )2. A. something
( )3. A. exercises
( )4. A. tell    
( )5. A. seem    
( )6. A. hear    
( )7. A. about  
( )8. A. thin    
( )9. A. little  
( )10. A. to hear                   
B. put down
B. nothing
B. medicine
B. say    
B. likes  
B. say    
B. for    
B. strong
B. a little
B. hear  
C. put out    
C. some      
C. medicines  
C. ask        
C. like      
C. find      
C. in        
C. fat        
C. few        
C. to listen to
D. put up          
D. anything        
D. exercise        
D. speak          
D. seems          
D. look for        
D. with            
D. healthy        
D. a few          
D. listen to                      
问答题 简答题