问题 单项选择题 A1/A2型题

毫安表指示反映X线故障,错误的为()

A.高压指示灯亮毫安表必有指数

B.高压短路毫安表指针上冲

C.X线产生量大毫安表指示值高

D.毫安表有显示值就一定有X线产生

E.限时不准毫安表指示值正常

答案

参考答案:A

解析:高压初、次级电路断路时,高压继电器工作,高压指示灯亮,但无X线产生,毫安表无读数。

完形填空
完形填空。
     Market is a place which we get food from. My  1   goes there every day.        
     Two   2  ago, I went with her to a   3 near our home. When we went inside, I saw the place was   4
and a lot of people were doing 5   there. It was very noisy because so many people were speaking   6   .
The sellers and the people were very     7  . There were many vegetables, fishes, and a lot of meat there. My mother  8   to buy some of them, but there were too many people. We had to wait for some time  9   we bought all the food we needed. Now everything in the market is much 10  than two years ago.
( )1. A. father            
( )2. A. days              
( )3. A. market            
( )4. A. clean              
( )5. A. cooking            
( )6. A. at the same time  
( )7. A. happy              
( )8. A. asked              
( )9. A. after              
( )10.A. bigger            

B. mother        
B. hours        
B. shop          
B. empty        
B. shopping      
B. all the same  
B. strange      
B. tried        
B. soon          
B. higher        

C. sister        
C. years          
C. place          
C. full          
C. reading        
C. all the day    
C. busy          
C. liked          
C. if            
C. better        

D. friend    
D. times    
D. cinema    
D. wet      
D. washing  
D. at times  
D. sorry    
D. helped    
D. until    
D. lazier    

单项选择题