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【单选题】
下列哪种密码是代换密码( )。A.
仿射密码
B.
Vigenere密码
C.
游程钥密码
D.
Hill密码
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反馈参考答案：
举一反三
【单选题】Section A Directions: In this section, you will hear 8 short conversations and 2 long conversations. At the end of each conversation, one or more questions will be asked about what was said. Both the ...
A.
He can't recall where he left his portable computer.
B.
He's got a terrible headache and forgets things easily.
C.
He's some trouble with a company but can't get rid of it.
D.
He doesn't remember the name of the computer manufacturer.
【简答题】船壳外板的编号(PD6)表示( )
【简答题】In the Ituri forest of America live many tribes，one of which is Pygmy. Most of the Pygmies in the tribe are not taller than four feet. They weigh only about eighty pounds each. In spite of their small...
【判断题】The American society as a whole operates on the basis of well-kept schedules.
A.
正确
B.
错误
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