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车辆气路系统保养工艺要求，检查低压报警器效能的技术标准是气压表的指示针低于0.4MPa时，低压报警灯点亮。

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参考答案：错

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       Today is Saturday, Ann    1   to school. Her parents Mr King and Mrs King    2   to work. They want
to go to the Haishan Park. The park is near their house, so they   3    to the park. It's 9 o'clock now. There are    4   people in the park. Some people chat(聊天).Some people    5   .Some people sing. There are a
lot of good places to   6    fun in the park. Ann plays on the merry-go-round(旋转木马)    7    other boys
and girls. Mr King     8   in the sports club. Mrs King dances in the music club. They   9    it's very   10    .
( )1. A. don't go      
( )2. A. don't go      
( )3. A. takes a walk    
( )4. A. no              
( )5. A. play the guitar
( )6. A. having          
( )7. A. having          
( )8. A. plays tennis    
( )9. A. think          
( )10. A. relax          		B. doesn't go    
B. doesn't        
B. take a walk    
B. many            
B. play guitar    
B. have            
B .and            
B. play the tennis
B. thinks          
B. relaxing        		C. not go          
C. not go          
C. takes the walk  
C. a lots of        
C. plays the guitar
C. has              
C. with            
C. plays the tennis
C. thinking        
C. relaxed          		D. goes                
D. go                  
D. take the walk        
D. lot of              
D. plays guitar        
D. enjoy                
D. or                  
D. play tennis          
D. look                
D. boring              
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解答题

已知代数式ax5+bx3+3x+c，当x=0时，该代数式的值为1．

（1）求c的值；

（2）当x=1时，该代数式的值为﹣1，求（a+b）3的值．
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