问题 判断题

超范围允许式纵联距离保护的优点是两侧的保护范围有重叠区,在单侧电源下发生短路时和在一相断线接地时能快速切除故障。

答案

参考答案:错

解析:

题目来源:高压电网继电保护原理与技术(第十五章)

专业类型:继电保护

设备类型:公共部分

难度等级:中等

电压等级:其他

知识点:基础知识

完形填空
完形填空
                                                           The Pecan Thief

      When I was six years old, I was visiting my grandfather' s farm in Kansas.Grandpa had sent me into
the   1   to gather pecans for us to enjoy later.
      Pecan picking was really   2   work and my little basket was only half full.I wasn' t about to  3 
Grandpa down.Just then something caught my  4  .A large brown squirrel was a few feet away.I watched
as he picked up a pecan, hurried to a tree and   5    in a large hole in the trunk.A moment later the squirrel    6  out and climbed down to the ground to pick up another nut.Once again, he took the pecan back to
his hiding place.
     Not so   7   anymore, I thought.I dashed over to the tree and looked into the hole.It was   8   with
pecans!Golden pecans were right there for taking.This was my  9 . Handful by handful, I scooped all of
those pecans into my basket.Now it was full! I was so_10_of myself.I couldn' t wait to show Grandpa
all the pecans.   11  , I ran back and shouted, "Look at all the pecans!" He looked into the basket and
said, "Well, well, how did you find so many?" I told him how I' d  12   the squirrel and taken the pecans
from his hiding place.
     Grandpa congratulated me on how smart I' d been in observing the squirrel and his habits.Then he did
something that__13__me.He handed the basket back to me and put his arm gently__14__my shoulders.
     "That squirrel worked very hard to gather his winter__15__of food, " he said."Now that all of his
pecans are gone, don' t you think that little squirrel will__16__the cold winter?"
     "I didn't think about that, " I said.
     "I know, " Grandpa said."But a good man should never take__17__of someone else' s hard work."
     Suddenly I felt a bit__18__.The image of the starving squirrel wouldn't__19__my mind.There was
only one thing I could do.I carried the basket back to the tree and poured all the nuts into the hole.
      I didn't eat any pecans that night, but I had something much more filling-the   __20__of knowing I
had done just the right thing.
( )1. A. rooms        
( )2. A. hard        
( )3. A. let        
( )4. A. sweater      
( )5. A. joined        
( )6. A. jumped        
( )7. A. strange      
( )8. A. covered      
( )9. A. time        
( )10. A. afraid      
( )11. A. Otherwise    
( )12. A. driven      
( )13. A. annoyed      
( )14. A. off        
( )15. A. supply      
( )16. A. escape      
( )17. A. place        
( )18. A. guilty      
( )19. A. open      
( )20. A. inspiration
B. woods      
B. dirty      
B. settle      
B. basket      
B. lived      
B. held        
B. secret      
B. filled      
B. choice      
B. ashamed      
B. However      
B. followed      
B. satisfied      
B. beside      
B. cost        
B. spend      
B. notice      
B. unconfident  
B. leave      
B. expectation  
C. holes  
C. light  
C. have    
C. eye    
C. discovered  
C. stood  
C. anxious  
C. rebuilt  
C. chance  
C. careful  
C. Besides  
C. protected  
C. surprised  
C. over    
C. support  
C. survive  
C. advantage  
C. embarrassed
C. cross  
C. impression  
D. roads            
D. easy              
D. keep              
D. hand              
D. disappeared      
D. found            
D. patient          
D. decorated        
D. achievement      
D. proud            
D. Therefore        
D. caught            
D. delighted        
D. around            
D. preparation      
D. flee              
D. charge            
D. nervous          
D. occupy            
D. satisfaction      
不定项选择