题目内容

We were buried under five feet of snow from December through March

A. 对
B. 错

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In between such chores ,

None of us will ever forget

We were buried under five feet of

使用密码技术不仅可以保证信息的(),而且可以保证信息的完整性和准确性,防止信息被篡改、伪造和假冒。

A. 机密性
B. 抗攻击性
C. 网络服务正确性
D. 控制安全性

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