问题 问答题 简答题

电气设备防爆形式有哪些?

答案

参考答案:

电气设备的基本防爆形式有:

①隔爆型D.;

②增安型E.;

③本质安全型(i);

④正压型(p);

⑤油浸型(o);

⑥充沙型(q);

⑦无火花型(n);

⑧洗封型(m);

⑨特殊型(s);

⑩粉尘防爆型

完形填空
Cloze test.
     What does "getting along with your teacher" mean, anyway? "Getting along" means you and your teacher
have a relationship that   1   for both of you, and that you both get what you   2   from the relationship. For
your teacher, he or she wants to make   3   you are careful, being respectful and polite, and   4   your best
to learn. For you, you   5   a teacher who respects you, answers your questions, and tries to   6   you learn.
You can get along with your teacher and learn without being friends with him or her, although it's    7   if
that happens.
     In every school, kids say some teachers are too   8   or serious, but don't judge a teacher   9   you are in
his or her class and can see for yourself. Most of time, your teacher is on your  10 . And a teacher who's
strict may be someone who  11  to do his or her job well-teaching you the  12  you should learn. It's also 
 13  to remember that making mistakes is a  14  of learning. By pointing out your mistakes and helping you 
 15  them, a teacher is teaching you.
( )1. A. works   
( )2. A. hate     
( )3. A. right    
( )4. A. trying    
( )5. A. become    
( )6. A. encourage  
( )7. A. well     
( )8. A. brave    
( )9. A. until    
( )10. A. place   
( )11. A. expects   
( )12. A. homework  
( )13. A. successful 
( )14. A. part    
( )15. A. practice  
B. offers 
B. agree   
B. sure   
B. making  
B. refuse  
B. help   
B. wrong   
B. strict  
B. since   
B. team   
B. fails   
B. subject  
B. possible 
B. piece   
B. receive         
C. looks     
C. need          
C. able        
C. taking      
C. want        
C. ask         
C. nice         
C. strange                          
C. when          
C. side      
C. allows      
C. example       
C. important 
C. chance      
C. correct     
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