题目内容:
For any information system to serve its purpose ,the information must be( )when it ìs needed.
A.integral
B.available
C.irreplaceable
D.confidential
参考答案:
答案解析:
For any information system to serve its purpose ,the information must be( )when it ìs needed.
A.integral
B.available
C.irreplaceable
D.confidential