问题 问答题 简答题

什么叫触电?触电形式有哪几种?

答案

参考答案:

电流通过人体叫触电。触电有三种情况:单相触电、两相触电和跨步电压触电。

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完形填空。
     Yesterday evening, when I went to town   1   my mother, we met a strange old man.
      It was raining   2   and we had no umbrella. We were trying to   3   a taxi when he came up to us. He was
carrying a nice umbrella and he said that he would give   4   for only a pound. He had forgotten his wallet and he
said he needed a taxi to go back home. My mother didn't believe what he had said at first, and   5   him a lot of
questions. But she finally believed the man and gave him the pound. She was happy to  6   a good umbrella for so
little. But the old man didn't get into a taxi. We walked   7   him and found he went into a pub and bought himself
a glass of   8   with the pound. After he drank it, he   9   his hat and took up one of the many wet umbrellas there and went off with the new one.
     Soon after that, he  10  it again.
(  ) 1. A. in      
(  ) 2. A. hard    
(  ) 3. A. get out of 
(  ) 4. A. it us    
(  ) 5. A. showed  
(  ) 6. A. have   
(  ) 7. A. with   
(  ) 8. A. orange  
(  ) 9. A. put on  
(  ) 0. A. lost   
B. near    
B. big   
B. get into   
B. it to us  
B. asked   
B. buy    
B. for    
B. tea    
B. took off  
B. dropped 
C. with    
C. heavy     
C. get up     
C. us it   
C. lent    
C. see     
C. before    
C. coffee     
C. put up    
C. sold  
D. by         
D. small     
D. get off     
D. us to it  
D. borrowed    
D. make       
D. after      
D. whiskey      
D. put down  
D. wore    
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