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问题 单项选择题

下列不属于压力释放装置必填项的有（）

A.设备名称

B.动作压力

C.启动压力

答案

参考答案：C

完形填空
完形填空
       My name is Leila. I am from the USA. I am   1   American girl. I am fourteen   2   old. Now I am in   3   with my parents.  I studies(学习) in No.2 Middle School in Beijing.  I love China  very much. I also
like Chinese food. I think Chinese food   4   very delicious(美味的). Today is  June 1st. It's Children's Day. It's also my   5   . My parents   6   a birthday party for me at home.  Many of   7   friends come to my home. We play CDs,  8   TV, sing the birthday song and    9  a big cake. Also, my mother   10   some photos for my friends and me. I am so happy today.
( )1. A. a        
( )2. A. year    
( )3. A. China    
( )4. A. be      
( )5. A. birthday
( )6. A. have    
( )7. A. my      
( )8. A. see      
( )9. A. eat      
( )10. A. takes   		B. an        
B. days      
B. Chinese  
B. is        
B. birth    
B. has      
B. I        
B. look      
B. eats      
B. take      		C. the      
C. dates    
C. America  
C. am      
D. day      
C. gives    
C. me      
C. look at  
C. bring    
C. have     		D. /          
D. years      
D. American  
D. are        
D. date      
D. give      
D. mine      
D. watch      
D. sell      
D. has        
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填空题

钢丝绳在使用一段时间后，必须加（）。
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