问题 多项选择题

符合下列()条件时可以选用普通高效电动机。

A.负荷率在0.6以上,无频繁起动、制动

B.单机容量大

C.运行速度高

D.每年连续运行时间在3000h以上

答案

参考答案:A,B,D

完形填空
完形填空。
     Everyone needs friends. We all like to    1   close to someone. It is nice to have a friend to talk, laugh
and do things with.    2  , sometimes we need to be alone. We don't always want people    3  . But we
would feel lonely if we never had a friend. No two people are    4  . Friends sometimes don't get on well.
That doesn't mean    5   they no longer like each other. Most of the time they will make up (言归于好),
and become    6   again. Sometimes friends move away. Then we feel very    7  . We miss them very
much, but we can    8   them and write to them. It could be possible that we could even see them again.
And we can also    9   new friends. 
     There's more good news for people who have friends. They live longer than people who don't have.
Why? It could be that they are   10  . Being happy helps you stay well and it could be good just knowing
that someone cares about you.
( )1. A. look    
(     )2. A. Hardly  
(     )3. A. alone    
(     )4. A. friendly 
(     )5. A. that    
(     )6. A. enemies  
(     )7. A. angry    
(     )8. A. call    
(     )9. A. look for
(     )10. A. happier  
B. watch    
B. Nearly    
B. away      
B. kind      
B. whether  
B. strangers     
B. sad      
B. ask      
B. find      
B. stronger  
C. feel          
C. Suddenly      
C. all over      
C. just the same 
C. how          
C. students      
C. happy        
C. tell          
C. make          
C. kinder        
D. see             
D. Certainly       
D. around          
D. quite different 
D. why                        
D. friends                        
D.  alone          
D. talk with       
D. know            
D. richer          
单项选择题 A1型题