问题 名词解释

比功率

答案

参考答案:

是指单位排气量所消耗的轴功率。它反映了同类型压缩机在相同吸、排气条件下能量消耗指标的先进性。

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       There was a robbery near Harry's home one night. Harry was looking out of his window   1  . He saw a robber run out of a shop and he saw the robber    2   his mask (面具).  He saw his face.
       Harry told his father what he had seen. When the police came,Harry and his   3   went to talk to them. "I saw the robber, " Harry told the police., "I can    4   him. He was about fifty years old. He   5   a big red nose. His ears were big. He was quite tall and thin.  He had   6   wrong with his right leg. "
       "  7   do you know that?" one of the policemen asked Harry.
       "He lamed (跛行), " Harry said.
        "What was he wearing?" the other policeman asked.
       "He was wearing black trousers and a shirt, " Harry said.
        "Hismask was a lady's stocking. His shoes were white sports shoes. "
       "You are a very clever boy, " the policeman said. "  8   ! Now we can send out a description of the
robber.
       " The police did this and the next day they caught him. They put him in a line   9    some other men.  
They asked Harry to point him out.  Harry did this _10_ The police arrested (逮捕) the man. Then Harry went home with his father happily.
( )1. A. at that time    
( )2. A. put on          
( )3. A. policeman      
( )4. A. tell            
( )5. A. wore            
( )6. A. nothing        
( )7. A. How            
( )8. A. I'm afraid not  
( )9. A. on              
( )10. A. easily        
B. at this moment
B. put off        
B. mother        
B. describe      
B. had            
B. everything    
B. What          
B. Of course      
B. for            
B. badly          
C. at last      
C. take out    
C. father      
C. ask          
C. took        
C. anything    
C. Why          
C. Well done    
C. with        
C. sadly        
D. at the beginning      
D. take off              
D. brother              
D. greet                
D. put                  
D. something            
D. When                  
D. It doesn't matter    
D. after                
D. suddenly              
单项选择题