以下对于信息安全的认识不正确的是()。
A安全是会随时间的推移而变化的
B世上没有100%的安全
C安全是相对的
D可以给出一种方案解决所有安全问题
Where was the result of the study first made public？
At a conference.
B. In a newspaper.
C. On television.
D. In a journal.
Why do people dream？
A. People dream so as to sleep better.
B. People dream in order not to go to REM sleep.
C. Because they may forget difficult problems in their dreams.
D. Because in their dreams they may find answers to their problems.
我国信息安全法律体系框架分为法律，行政法规，地方性法规和规章，以及规范性文件等四个层面。()
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