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【单选题】

In the following essay, each blank has four choices.Choose the most suitable one from the four choices and write down in the answer sheet. There are two types of key technology: private key and public key. Private-key encryption methods are called (71) ciphers, information is encrypted with (72) both the sender and receiver hold privately. Public-key encryption methods are called (73) ciphers, (74) created for each user, encryption key and deception key are (75)

A.same
B.different
C.difference
D.some
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根据网考网移动考试中心的统计,该试题:

1%的考友选择了A选项

73%的考友选择了B选项

0%的考友选择了C选项

26%的考友选择了D选项

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