为什么熔断器不能作异步电动机的过载保护?

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问题:

为什么熔断器不能作异步电动机的过载保护?

考点:安全生产知识竞赛煤矿安全知识煤矿安全知识题库
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停用或注销的支付密码器,停用或注销日前该支付密码器签发的()在其有效期内有效。

A.全部凭证

B.结算业务申请书

C.支票

D.经中国人民银行批准的其他支付凭证

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下列各项中,能够引起资产总额和所有者权益总额同时变动的是( )。

A.根据经过批准的利润分配方案向股东发放现金股利

B.用法定公益金为企业福利部门购置医疗设备一台

C.以低于债务账面价值的现金清偿债务

D.按规定将应付可转换公司债券转换成股份

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完形填空。
     We may look at the world around us, but somehow we manage not to see it until whatever we've become
used to suddenly disappears.   1  , for example, the neatly-dressed woman I   2   to see-or look at-on my way
to work each morning.
     For three years, no matter   3   the weather was like, she was always waiting at the bus stop around 8:00
am. On   4   days, she wore heavy clothes and a pair of woolen gloves. Summertime   5   out neat, belted cotton
dresses and a hat pulled low over her sunglasses.   6  , she was an ordinary working woman. Of course, I   7  
 all this only after she was seen no more. It was then that I realized how   8   I expected to see her each morning.
You might say I   9   her.
     "Did she have an accident? Something  10 ?" I thought to myself about her  11 . Now that she was gone, I
felt I had  12  her. I began to realize that part of our  13  life probably includes such chance meetings with
familiar  14 : the milkman you see at dawn, the woman who  15  walks her dog along the street every morning,
the twin brothers you see at the library. Such people are  16  markers in our lives. They add weight to our  17  
of place and belonging.
     Think about it.  18 , while walking to work, we mark where we are by  19  a certain building, why should
we not mark where we are when we pass a familiar, though  20 , person?
( )1. A. Make          
( )2. A. happened      
( )3. A. what          
( )4. A. sunny         
( )5. A. took          
( )6. A. Clearly       
( )7. A. believed      
( )8. A. long          
( )9. A. respected     
( )10. A. better       
( )11. A. disappearance
( )12. A. forgotten    
( )13. A. happy        
( )14. A. friends      
( )15. A. regularly    
( )16. A. common       
( )17. A. choice       
( )18. A. Because      
( )19. A. keeping      
( )20. A. unnamed      
B. Take          
B. wanted         
B. how           
B. rainy         
B. brought       
B. Particularly  
B. expressed     
B. often         
B. missed         
B. worse          
B. appearance    
B. lost          
B. enjoyable     
B. strangers     
B. actually      
B. pleasant      
B. knowledge      
B. If           
B. changing       
B.unforgettable  
C. Give        
C. used        
C. which       
C. cloudy      
C. carried     
C. Luckily     
C. remembered  
C. soon        
C. praised     
C. more        
C. misfortune  
C. known       
C. frequent    
C. tourists    
C. hardly      
C. important   
C. decision    
C. Although    
C. passing     
C. unbelievable    
D. Have           
D. tried          
D. when           
D. snowy          
D. turned         
D. Especially     
D. wondered                    
D. much           
D. admired        
D. less           
D. fortune        
D. hurt           
D. daily          
D. guests         
D. probably       
D. faithful       
D. sense          
D. However        
D. mentioning     
D. unreal         
题型:问答题 简答题

PGM-48钢轨打磨车的主发动机的电压调节器在发动机转速为1800转/小时,将恒定输出()的电源。

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飞信业务的英文名称是()。

A、Fetion

B、Feixin

C、Fation

D、Feion

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