下列参数不属于整流二极管的主要参数的是()。 A.最大整流电流 B.最高反向工作电压

题型:单项选择题

问题:

下列参数不属于整流二极管的主要参数的是()。

A.最大整流电流

B.最高反向工作电压

C.反向漏电流

D.死区电压

考点:初级维修电工初级维修电工题库
题型:单项选择题
完形填空。
     Arthur was an Indian boy. He didn't like __1__ When his mother asked him to wash his hands, he
 never washed them __2__ . He only put his  __3__ in the water for a __4__ seconds and took them
  __5__   again. __6__ day, Arthur's uncle's family came to  __7__ with Arthur's parents and they brought
  their son Tom __8__ them. Tom was  __9__ than Arthur and didn't like water either (也). They went out
  to play. After an hour Arthur looked __10__ Tom's hands and then said proudly (骄傲) ,"My hands are
  dirtier than yours! " Tom answered angrily, "Yes, you are older than I am. "
( )1. A. washing    
( )2. A. well        
( )3. A. foot        
( )4. A. little      
( )5. A. up          
( )6. A. An one      
( )7. A. stay        
( )8. A. at          
( )9. A. older      
( )10. A. at        
    B. water    
    B. good    
    B. hands    
    B. few      
    B. out      
    B. A        
    B. come    
    B. on      
    B. younger  
    B. for      
C. playing      
C. clean        
C. clothes      
C. a few        
C. off          
C. One          
C. go            
C. for          
C. bigger        
C. after        
D. wash        
D. black      
D. face        
D. one        
D. away        
D. On a        
D. play        
D. with        
D. smaller    
D. up          
题型:单项选择题
已知向量
OA
=(k,2,1)
OB
=(4,5,1)
|
AB
|=5
,则k=______.
题型:单项选择题

当电气设备发生对大地漏电时,人距离电设备越近,接触电压越高,跨步电压越低。

题型:单项选择题

监理人员对自己收集的数据进行加工是从( )开始。

A.选择

B.鉴别

C.核对

D.汇总

题型:单项选择题

严复主张( ),反对张之洞的“中体西用”

A.体用一致

B.体用分开

C.体用相混

D.不讲体用

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