题目内容

代理防火墙工作在()

A. 物理层
B. 网络层
C. 传输层
D. 应用层

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下列各项中属于法律事实中行为的是()

A. 签订合同
B. 发生地震
C. 承兑汇票
D. 发行债券

计算机病毒的检测手段有特征代码法、校验和法、行为监测法和()

关于会计要素,下列说法正确的有()

A. 资产必须为企业所拥有
B. 费用可能表现为负债的减少
C. 收入能导致企业所有者权益的增加
D. 收入只包括本企业经济利益的流入,不包括为第三方或客户代收的款项

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. 30()

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!

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