皮皮学，免费搜题
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【单选题】
计算出或估计出破译一个密码系统的计算量下限，利用已有的最好方法破译它所需要的代价超出了破译者的破译能力(诸如时间、空间、资金等资源)，那么该密码系统的安全性是( )。A.
计算上的安全
B.
有条件安全
C.
可证明的安全
D.
无条件安全
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皮皮学刷刷变学霸
举一反三
【单选题】______could be judged from his eyes, he felt terribly sorry for what he had done.
A.
Which
B.
That
C.
As
D.
It
【简答题】___________ the race, she felt terribly exhausted.
【单选题】I felt terribly sorry to learn that his sister _______ after having fought against cancer for three years.
A.
passed away
B.
fell ill
C.
have been dead
D.
gave away
【单选题】I felt terribly sorry to learn that his sister ______ after having fought against cancer for three years.
A.
passed by
B.
passed on
C.
passed away
D.
passed through
【单选题】失语症患者的听理解障碍，错误的是
A.
不发生于Broca失语
B.
也可能合并阅读障碍
C.
有时对句子的理解较单词好
D.
家属往往反映患者“什么都听得懂”
E.
重度障碍者可考虑代偿策略训练
【单选题】读者所丢失的“一卡通”(或借书证)在挂失前被他人冒用,后果由谁承担?
A.
可以免责
B.
只要挂失就无需负责
C.
向图书馆老师寻求帮助
D.
由“一卡通”(或借书证)的所有者
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