题目内容

漏洞威胁等级分类描述中,5级指()

A. 低影响度,低严重度
B. 低影响度,高严重度
C. 高影响度,低严重度
D. 高影响度,高严重度

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A:I’m so grateful that you can come to see me off.B:(26)A:(27) I’ve been in Sydney for a week.And I'm leaving for Melbourne.B:Yes.When are you going to leave Melbourne for home?A:On Thursday,but I won’t be home until Friday morning.B:(28)A:I don’t know.But I’m sure there will be new chances.B:Please come back to Sydney when you visit Australia again.A:(29) And please let me know if you are coming to China.B:Sure.We’ll miss you.A:Me,too.But I’ll keep in touch.B:(30)A:Thank you.Goodbye,Linda. 28()

A. I will.
B. It’s my pleasure.
C. Have a pleasant journey to Melbourne!
D. When are you going to visit Australia again?
E. How time flies!

按照病毒攻击的系统进行分类,计算机病毒可分为:攻击DOS系统的病毒、攻击Windows 系统的病毒、攻击Os/2系统的病毒和()

A. 攻击UNIX系统的病毒
B. 攻击微型计算机的病毒
C. 攻击小型计算机的病毒
D. 攻击工作站的计算机病毒

常用的网络数据加密方式有链路加密、节点加密和()

You will succeed in the end()you give up halfway.

A. even if
B. as if
C. as long as
D. unless

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