问题 单项选择题 案例分析题

某电厂220kV双母线单分段接线,二回发变组接母线及六回出线,每段母线装一组PT和避雷器,若升压站运行方式为分段和母联断路器闭合,线路均匀接在三段母线上。

当一段母线故障,同时分段或母联断路器其中之一拒动,试分析停电回路可能有()。

A.1/2

B.1/3

C.2/3

D.全停

答案

参考答案:C

完形填空
完型填空。
    Young people are often unhappy when they are with their parents. They say that their parents don't    1   
them. They often think their parents are too strict with them, and they are never given a    2   hand.
    Parents often find    3   difficult to win their children's trust and they seem to forget how they themselves    4   when they were young.
    For example, young people like to do things without much thinking. It is one of their ways to    5   that
they grow up and they can do with any difficult things. Older people worry more easily. Most of them plan
things ahead and don't like their plans to be changed.
    When you want your parents to let you do something, you will have better success    6   you ask before
you really start doing it.
    Young people often make their parents angry by clothes they want, the music they enjoy and something
else. But they don't    7   to cause any trouble. They just feel that in this way they can be cut off from the old
people's world and they want to make a new culture of their own. And if their parents don't like their music
or their clothes or their manner of speech, the young people feel very    8  .
    Sometimes you even don't want your parents to say "   9  " to what you do. You want to stay at home
alone and do what you like.
    If you plan to control your   10 , you'd better win your parents over and try to get them to understand you.
If your parents see that you have high sense of responsibility, they will certainly give you the right to do what
you want to do.
( ) 1. A. remember
(     ) 2. A. helpful 
(     ) 3. A. that    
(     ) 4. A. thought 
(     ) 5. A. learn  
(     ) 6. A. since  
( ) 7. A. mean    
(     ) 8. A. lonely  
(     ) 9. A. Yes    
(     ) 10. A. life  
B. help  
B. useful 
B. them  
B. wanted     
B. see  
B. if    
B. care 
B. happy 
B. No    
B. work  
C. understand  
C. free      
C. one      
C. needed    
C. find      
C. because     
C. like      
C. worried  
C. Sorry    
C. study    
D. like          
D. strong        
D. it            
D. felt          
D. show                            
D. though        
D. decide        
D. strange       
D. That's right 
D. health        
问答题