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问题 单项选择题

赢得值法用三个基本值来表示项目的实施状态，并以此预测项目可能的完工时间和完工时的可能费用。其中用某一时点应当完成的工作所需投入资金或花费成本的累计值的是（）。

A.赢得值

B.累计计划成本

C.完成投资额BCWS

D.实际成本额ACWP

答案

参考答案：B

多项选择题

下列各项中，可能影响企业当期利润表中营业利润的有（）。

A.技术研究阶段发生的研究人员工资

B.计提存货跌价准备

C.对外出租投资性房地产获得的收入

D.处置固定资产取得的净收益
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单项选择题

Networks can be interconnected by different devices in the physical layer networks can be connected by (71) or hubs．which just move the bits from one network to an identical network．One layer up we find bridges and switches which operate at data link layer．They can accept (72) ，examine the MAC address and forward the frames to a different network while doing minor protocol translation in the process in me network layer，we have routers that can connect two networks，If two networks have (73) network layer，the router may be able to translate betweenthe packer formats．In the transport layer we find transport gateway，which can interface between two transport connections Finally，in the application layer，application gateways translate message (74) ．As an example，gateways between Internet e-mail and X，400 e-mail must (75) thee-mail message and change various header fields．

A．frames

B．packets

C．packages

D．cells
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