题目内容

【2015年11月软考真题】Operating systems provide( )between users and the computer.

A. a link
B. an interface
C. devices
D. application

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A. open
B. close
C. click
D. double-click

A. attachment
B. page
C. writing
D. document

A. System specification
B. Program specification
C. User guide
D. System document

A. "S00001" or "S00002"
B. "S00001" and "S00002"
C. in("S00001" or "S00002")
D. in("S00001" and "S00002")