试题与答案

给水泵出口止回阀的作用是什么?

题型:问答题 简答题

题目:

给水泵出口止回阀的作用是什么?

答案:

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to help my father with his work    6    my family.
     To my surprise, things completely changed _ 7   . the beginning of the new term. My head teacher
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"Always have a dream." with tears in my eyes, I stepped into the school.
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life is.  Just as a great man says.  "When one door shuts,  another opens in life. "
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( )6. A. support    
( )7. A. after      
( )8. A. raised    
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( )10. A. what    
B. story      
B. excited    
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C. news        
C. interested  
C. shouting    
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