问题 单项选择题

配制镀铬槽液时,用电解法生成三价铬,应当阴极面积大于阳极面积的()。

A、1倍

B、10倍

C、5倍

答案

参考答案:B

完形填空
完形填空。
  Tom and Fred were talking about the year 2050.
  "What will   1   be like in the year 2050?" asked Tom.
  "I don't know," said Fred. "What do you think?"
  "Well, no one knows. But it is   2   to guess," said Tom. "In the year 2050
everybody will   3   a pocket (袖珍)computer. The computer will give people the   4   to all their problems. We shall all have telephones in our pockets,   5   .
  And we'll be able to talk to our friends all over the world. Perhaps we'll be able to    6   them at the same time. Machines will do   7    of the work, and
people will have more   8   . Perhaps they will work Only two or three days a
week. They will be able to fly to the moon by spaceship and spend their holidays there."
  "I'm very   9   to hear that. I hope to fly to the moon. And I hope I'll be able
to live   10  ," said Fred. "Won't that be interesting? Just like a fish."
( )1. A. our home  
( )2. A. pleased    
( )3. A. carry      
( )4. A. news      
( )5. A. either    
( )6. A. call      
( )7. A. most      
( )8. A. work      
( )9. A. sorry      
( )10. A. in the sea
B. the traffic
B. no use    
B. bring    
B. ways      
B. again    
B. see      
B. many      
B. duty      
B. glad      
B. on land  
C. a factory      
C. interesting    
C. give          
C. things        
C. too            
C. look          
C. lot            
C. holidays      
C. sure          
C. on the mountain
D. the world      
D. unusual        
D. send            
D. answers        
D. also            
D. listen          
D. every          
D. times          
D. afraid          
D. under the ground
单项选择题