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水轮发电机的类型有哪些？其中立式水轮发电机的结构是怎样的？

答案

参考答案：

按其布置方式的不同分为立式和卧式两种，按推力轴承的位置不同分为悬吊型和伞形两种，按冷却方式的不同分为

106空气冷却和水冷却。立式水轮发电机主要包括定子、转子、上机架、下机架、推力轴承、导轴承、空气冷却器、制动系统、励磁机等。

完形填空
完形填空。

     One afternoon just before Christmas, an old man was walking    1    the city center.The shop were
all    2    of good things and crowded with    3    shoppers. Sunddenly he saw a dirty boy    4    on the
ground crying sadly. When the kind old man asked him why he was crying, the little boy told him that
he had    5   a ten-penny (便士) piece that his uncle had    6   him. At once the old man pulled out a handful
of coins. He    7   out a shining new ten-penny piece and handed it to the poor child."Thank you very
much," said the little boy, drying his    8  . He cheered up at once.
     About an hour    9  , the old man was making his way   10   home by the same road.
     To his   11 , he saw the dirty boy in the same place, crying sadly as   12  . He went up to the boy and
asked him   13   he had lost ten-penny piece he had just given him as well. The boy told him that he had not
lost the second coin   14   he still couldn't find the first one. "If I could find my own piece," he cried, "I would
have   15   pennies now."

( )1. A. by      
(     )2. A. full    
(     )3. A. delight 
(     )4. A. sit     
(     )5. A. spent   
(     )6. A. taken   
(     )7. A. picked  
(     )8. A. mouth   
(     )9. A. late    
(     )10. A. on      
(     )11. A. surprise
(     )12. A. usually 
(     )13. A. where   
(     )14. A. and     
(     )15. A. ten      		B. between      
B. fully       
B. cheer       
B. sitting     
B. left         
B. brought      
B. made         
B. eyes         
B. later        
B. for          
B. surprised   
B. usual       
B. when        
B. but         
B. fifteen    		C. through      
C. fill       
C. cheerful    
C. lie       
C. paid        
C. given      
C. gave          
C. feet         
C. pass        
C. to           
C. surprising  
C. before      
C. why         
C. while        
C. twenty   		D. over              
D. filled        
D. unhappy         
D. sleep        
D. lost          
D. borrowed       
D. left             
D. ears            
D. past          
D. back              
D. surprisingly  
D. well            
D. if           
 D. as              
D. thirty       
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