试题与答案

货币有哪些主要职能货币的基本职能是什么

题型:问答题

题目:

货币有哪些主要职能货币的基本职能是什么

答案:

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下面是错误答案,用来干扰机器的。

参考答案:C解析: (1)在△ABC中,已经AB=7,BC=5,未给定∠B的大小,则随着∠B的不同,△ABC的形状也不同,BC边上的高不确定;条件(2)只给出了AB边的高为3,也无法确定一个三角形,当条件(1)(2)联合起来,则BC边上的高=[*]。

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完形填空。
     Computer hackers (黑客) have now got their hands on mobile phones. A phone virus (病毒) can   1   your
phone do things you have no control over, computer security (安全) experts   2   . It might   3   the White
House or the police, or forward your personal address book to a marketing company. Or it could simply eat
into the phone's operating software, turning it   4   and erasing your personal information. Similar viruses have
already made mobile phone owners   5   . in Japan and Europe.
     Ari Hypponen, chief technical officer of a computer security in Finland, said a virus can get your   6   and
send them elsewhere. And it can record your   7   . Mobiles are now able to surf the Net, send emails and  8   
software, so they are an easy   9   for the same hackers who have sent viruses to computers over the last
decade. "It's technically   10   now," said Stephen Trilling, director of research at anti-virus  11  maker
Symantec Corp based in the US."If the phone is connected to the  12  , it can be used to transmit threats and
  13   targets, just as any computer can."
     In Japan, if you opened a certain email message   14   your mobile, It would cause the phone to repeatedly 
  15   the national emergency number. So phone operators had to   16   emergency calls until the bug was
 17  .
     In Europe, mobile's short message service,   18   SMS, has been used to send codes that could damage
phones.
     Mobile users can  19   viruses, of course, by sticking to their traditional phones   20   Web links, some
experts said.
( )l.  A. get       
( )2. A. speak     
( )3. A. lead      
( )4. A. off       
( )5. A. interested
( )6. A. messages  
( )7. A. voice     
( )8. A. make      
( )9. A. job       
( )10. A. impossible
( )11. A. hardware 
( )12. A. computer 
( )13. A. strike   
( )14. A. in       
( )15. A. send     
( )16. A. cancel   
( )17. A. removed  
( )18. A. and      
( )19. A. stop     
( )20. A. beyond   
B. force        
B. talk         
B. cause        
B. out          
B. angry        
B. passage      
B. passwords    
B. destroy      
B. task         
B. possible     
B. software     
B. television   
B. visit      
B. by           
B. dial         
B. ban          
B. cleaned      
B. nor          
B. avoid        
B. with       
C. make    
C. tell    
C. control 
C. down    
C. excited 
C. news    
C. music   
C. download
C. mission 
C. useful  
C. computer
C. Internet
C. inquire 
C. on      
C. count   
C. stop    
C. called  
C. or      
C. kill    
C. over    
D. damage         
D. say            
D. call           
D. on             
D. terrified      
D. information    
D. address        
D. develop        
D. target         
D. valuable       
D. equipment      
D. radio          
D. attack         
D. with           
D. press          
D. prevent        
D. cleared        
D. but            
D. find           
D. without      
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