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问题 单项选择题

以下加密方式中能同时提供保密性和鉴别性的有（）

A.A用自己私钥加密报文传给B

B.A用自己公钥加密报文传给B

C.A用B的公钥加密报文传给B

D.A用自己私钥加密报文，再用B的公钥加密报文传给B

答案

参考答案：D

问答题

OOO Consult offers business advisory services. The company decided to make major improvements to the reception rea of its main offi ce and entered into a contract with OOO Fix to carry out the necessary work.In order to install new lighting, employees of OOO Fix had to dig a hole in the area where customers wait for their ppointments. During the course of this work, Anna, a customer of OOO Consult, suffered injury after tripping on bricks hat had been removed by the workers and left on the fl oor. Anna subsequently had to take one month’s sick leave and ad to pay for medical care.Required:

(b) Discuss the potential obligations of OOO Consult, OOO Fix and the employees of each organisation that may rise from the injury to Anna, and whether these obligations may be dependent on Anna’s own conduct. 6 marks)
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问答题 简答题

实行全程退役的士官，退出现役的条件是什么？
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