问题 问答题 论述题

通常ZL50铲运机采用的是何种行车制动系统?

答案

参考答案:

ZL50装载机采用的是气液综合式行车制动系,它由双管路气压系统和双管路液压系统组成。由空气压缩机产生的压缩空气经油水分离器后,进入两储气筒。两储气筒相互独立。双腔制动阀由制动踏板直接操纵。踩下制动踏板,两储气筒中的压缩空气分别经双腔制动阀的上.下腔充入各自的助力器,使压力油推动前.后轮制动器的分泵活塞,使车轮制动。放松制动踏板时,助力器的空气经制动阀排入大气,制动接触。

完形填空
完形填空。
     John was the only son of a rich American businessman. Usually he _1   to school by the driver    2   
 his father's beautiful car before the driyer took John's father to his office. One evening his father
told him that he had to go to the airport early   3  ,  4   he would need the car at the time that John had
to go to school.   5   John's mother had another car, she would still be   6   when he   7   the house.
   "Well, how will I get to school if you need your car and Mummy is still in bed?"John asked. His father
thought this was a good opportunity (机会) to teach him a lesson about how hard   8   for many  people
of the world, so he answered, "You'll go in the same way 9   every   10 child in the word goes-on a bus. "
( )1. A. went      
( )2. A. by        
( )3. A. next day  
( )4. A. but        
( )5. A. Since      
( )6. A. in bed    
( )7. A. leave      
( )8. A. was life  
( )9. A. of        
( )10. A. the other
B. came        
B. with        
B. tomorrow    
B. so          
B. But        
B. in the bed  
B. had to leave
B. the life was
B. such        
B. other      
C. was taken  
C. in        
C. in a day  
C. because    
C. Though    
C. on the bed
C. left for  
C. life was  
C. so        
C. another    
D. was brought      
D. on              
D. the next day    
D. for              
D. Because          
D. on bed          
D. had to leave for
D. was the life    
D. as              
D. others          
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