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2018年下半年 上午试卷 综合知识
第 73 题
章/节 专业英语  
 
 
A( )is a copy of a file for use in the event of failure or loss of the original.
 
  A.  second storage
 
  B.  buffer
 
  C.  backup
 
  D.  database




 
 
相关试题     专业英语 

  第74题    2010年上半年  
One feature of (74) is that it is possible to arrange for a single message to be sent to a laige number of other users simultaneously.

  第75题    2016年上半年  
(75) is a process that consumers go through to purchase products or services over the Internet.

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Once processed, the (72) is shown to the user.




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