题目内容

DES中的扩展变换E和置换运算P是非线性的。()

查看答案

搜索结果不匹配？点我反馈

更多问题

PPTP是PPP的扩展，提供了一种通过IP网络传送PPP数据报文的方法。()

自主访问控制是基于用户的，故此具有很高的灵活性。()

如果你想学到一些东西，那你就应该自己参加到这项工作中去。

five hundred people are believed to have drowned.

As many as
B. As much as
C. So many as
D. So much as