问题 判断题

一般弧光放电过度电阻随拉弧时间延长而变小

答案

参考答案:错

解析:

知识点:各种规程

问答题
完形填空
完形填空。
     Halloween falls __1__ October 31 st. It is one of the most favourite holidays for __2__ in the USA.
 People __3__ in costume like a witch, a ghost or a skeleton. The children go to houses __4__ "trick or
 treat". Long ago, __5__ a child was not good, he or she would get a trick like __6__ a stone in his or her
  bag instead of some candy. Parties are also popular __7__ the evening. People go to parties __8__ 
 costumes and play different __9__ . People also like __10__ to ghost stories and watching scary movies.
( ) 1. A. in        
( ) 2. A. child    
( ) 3. A. 1ook like
( ) 4. A. to say    
( ) 5. A. and      
( ) 6. A. having    
( ) 7. A. in        
( ) 8. A. with      
( ) 9. A. a game    
( ) 10. A. 1isten  
B. on        
B. children  
B. 1ikes      
B. say        
B. if        
B. to have    
B. at        
B. in        
B. games      
B. 1istens    
C. at          
C. childs      
C. dress      
C. says        
C. as          
C. has        
C. of          
C. at          
C. the game    
C. to listens  
D. /              
D. childrens        
D. dress up        
D. said            
D. but              
D. Have            
D. on              
D. of              
D. an game          
D. 1istening