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问题 选择题

解放战争时期，解放军收复延安是在

A．粉碎国民党全面进攻期间

B．进行战略反攻期间

C．三大战役期间

D．渡江战役胜利后

答案

A

本题旨在考查考生对解放战争过程中基本知识的识记。解放军收复延安时国民党正进行全面进攻。

单项选择题

某3年期债券面值为1000元，息票率为10%，1年付息1次，当前售价为1010.80元，则该债券的到期收益率为（）。

A.10%

B.8.66%

C.9.75%

D.9.57%
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单项选择题

In a public-key cryptosystem, (71) encrypted with the public key can only be deciphered with the private key from the same (72) . Conversely, (71) encrypted with the private key can be decrypted only with the public key. Users can make their public keys (73) available or place them at a key distribution center or others to access. However, the private key must be (74) safe. In public-key systems there’s no (75) to find a safe channel for communicating a shared secret key.

A．length

B．pair

C．size

D．space
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