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问题 多项选择题

在项目国民经济评价中，下列关于影子工资及影子工资换算系数表述正确的有( )。

A．影子工资是项目使用劳动力而使社会为此付出的代价

B．影子工资是企业应该付给劳动力的合理工资

C．影子工资一般通过影子工资换算系数计算

D．影子工资换算系数对于不同性质的劳动力具有不变性

E．影子工资作为项目使用劳动力的费用

答案

参考答案：A,C,D

单项选择题

Routing protocols use different techniques for assigning (37) to individual networks. Further, each routing protocol forms a metric aggregation in a different way. Most routing protocols can use multiple paths if the paths have an equal (38) Some routing protocols can even use multiple paths when paths have an unequal cost. In either case, load (39) can improve overall allocation of network bandwidth. When multiple paths are used, there are several ways to distribute the packets. The two most common mechanisms are per-packet load balancing and per-destination load balancing. Per-packet load balancing distributes the (40) across the possible routes in a manner proportional to the route metrics. Per-destination load balancing distributes packets across the possible routes based on (41)

41（）

A.destinations 

B.resources 

C.packets 

D.sources
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多项选择题

ADSL2系统实时地对（）进行采集、上报，并直观地显示在网管操作平台上，以方便网络运营者对网络运行状态进行分析，并根据具体情况及时采取相应的故障排除措施。

A.线路噪声

B.回波损耗

C.回路阻抗

D.信噪比
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