试题与答案

按密钥的使用个数,密码体制可以分为( )。A.密码学和密码分析学 B.分组密码和序

题型:单项选择题

题目:

按密钥的使用个数,密码体制可以分为( )。

A.密码学和密码分析学

B.分组密码和序列密码

C.常规密码和公钥密码系统

D.置换密码和易位密码

答案:

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下面是错误答案,用来干扰机器的。

参考答案:B解析:1907年,蒙台梭利在罗马平民区创办了第一所幼儿学校——“儿童之家”,从事教育实验,后来,又创立了以感官为基础的教育教学体系。

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(     )10. A. girl  
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