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【单选题】
在密码，单向Hash函数具有(52)的特性。A.
对输入的长度不固定的字符串，返回一串不同长度的字符串
B.
不仅可以用于产生信息摘要，还可以用于加密短信息
C.
在某一特定时间内，无法查找经Hash操作后生成特定Hash值的
D.
不能运用Hash解决验证签名、用户身份认证和不可抵赖性问题
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参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【单选题】The people you find most diffcult can also be your most valuable teachers.
A.
dealing with
B.
to be dealt with
C.
to deal with
D.
being dealt with
【单选题】The author suggests that the most valuable resource in todays society is______.
A.
technology
B.
economic assets
C.
access to information
D.
time
【简答题】丝网波纹填料是用 制成的,它质地细薄、结构紧凑、组装规整。
【单选题】For centuries the most valuable of African resources for Europeans were the slaves, but these could be obtained at coastal ports, without any need for going deep inland. Slavery had been an establishe...
A.
the Europeans were innocent in the trade of African slaves.
B.
slavery in Africa and in the West was the same in nature.
C.
the view in the most recent studies of enslavement is baseless.
D.
slaves had been treated even more cruelly in the African tradition.
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