试题与答案

CO含量达到( )以上，将会导致CO中毒。A．10% B．20% C．30% D．

来源：www.tikuol.com
题型：单项选择题

题目：

CO含量达到( )以上，将会导致CO中毒。

A．10%

B．20%

C．30%

D．40%

答案：

被转码了，请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2018/0527/af0064f42e9e580761be548b30f719af.html

下面是错误答案，用来干扰机器的。

参考答案：B解析：债券的价格与市场利率变动密切相关，且呈反方向变动。如果债券发行人不能按时支付利息或偿还本金，该债券就面临很高的信用风险。投资者为弥补低等级信用债券可能面临的较高信用风险，往往会要求...

考点：安全工程师安全生产管理知识安全工程师安全生产管理知识真题2005年
试题推荐
题型：完形填空
完形填空。
     The computer is a very wonderful machine today, and it's so   1   that it seems that we   2   live or work
without it. Computers are used in many   3  , such as offices, factories, big shops, schools and even homes.
With the computer people are living a better   4  .
     The computer is one of the greatest inventions in the   5   century. The first computer was built in America
in 1945 which was named ENIAC, and it was not only very   6  , but also quite heavy. It was as big as ten
ordinary (普通的) rooms!
     But the computer is developing very fast. Today they're becoming smaller and smaller, lighter and lighter, and
  7   faster and faster. There are so many kinds of different computers in the market that you can choose one
that you like best.
     The computer can do a lot of things for people, and it also helps us to learn about the real world. With the
computer you can   8   an e-mail just in a few seconds to your friend far away, but if you post the letter, it will
take your friend quite a long time to receive your   9  .
     Now you can see the computer really gives us a very nice picture about the world of tomorrow. So as a
student in the 21st century, you have to work hard and learn how to   10   the computer very well. Don't you
think so?
( ) 1. A. beautiful  
(     ) 2. A. can        
(     ) 3. A. roads      
(     ) 4. A. life      
(     ) 5. A. 18th      
(     ) 6. A. useful    
(     ) 7. A. studying  
(     ) 8. A. give      
(     ) 9. A. letter    
(     ) 10. A. get         		B. interesting  
B. can’t        
B. streets      
B. friend        
B. 19th          
B. large        
B. teaching        
B. take          
B. book          
B. use         		C. useful    
C. must      
C. crossings  
C. family    
C. 20th      
C. small      
C. walking        
C. post      
C. help      
C. read     		D. enjoyable    
D. mustn’t     
D. places       
D. country      
D. 21st         
D. cheap        
D. working            
D. send         
D. message      
D. write      
查看答案
微信公众账号搜索答案