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密码学作为数学的一个分支,是研究信息系统安全保密的科学,是()和密码分析学的统称。

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资产负债表日,交易性金融资产的公允价值低于其账面余额的差额,应贷记()

A. “公允价值变动损益”科目
B. “公允价值变动”科目
C. “交易性金融资产—成本”科目
D. “交易性金融资产—公允价值变动”科目

某公司委托券商代理发行股票2000万股,每股面值1元,每股发行价格5元。按发行价格的2%向券商支付发行费用,该公司在收到股款时,应计入“资本公积”科目的金额为()万元。

A. 750
B. 7800
C. 8000
D. 24750

下列属于个人防火墙缺点的是()

A. 不能抵挡内部攻击
B. 不能为用户隐蔽IP地址
C. 不能抵挡外来攻击
D. 不能保护网络系统

A:Excuse me,Miss.B:(26)A:Yes,l’d like to get some information about the summer course.B:(27)A:Can you tell me the starting and finishing time of the course,please?B:Yes.The course begins on July 15 and runs until August 20.A:OK,and what courses will we learn?B:There are listening,speaking,reading and writing (28).A:Right,and what time will the classes be had?B:Well,most of them are in the morning.There are only a few classes in the afternoon.A:Do you have a (29)?B:Sorry.1 can’t get a timetable for you.A:That’s OK.And when will the final exams be held?B:(30)A:OK.Well,thank you,Miss. 30()

A. timetable
B. May I help you
C. courses.
D. They will begin on August l6 and run until August 18.
E. How can I help you

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