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问题 多项选择题

按照FIDIC合同条件，不允许承包商随意将工程的任何部分分包出去，但是 ( )除外。

A．高级装潢工程

B．指定规格的材料采购

C．特殊技术的作业

D．部分工作分包给指定分包商

E．提供劳务

答案

参考答案：B,D,E

单项选择题

Networks can be interconnected by different devices. In the physical layer, networks can be connected by (11) 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 (12) ,examine the MAC address, and forward the frames to a different network while doing minor protocol translation in the process. In the network layer, we have routers that can connect two networks. If two networks have (13) network layer, the router may be able to translate between the 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 (14) . As an example, gateways between Internet e-mail and X.400 e-mail must (15) the e-mail message and change various header fields.

（13）是（）

A.special

B.dependent

C.similar

D.dissimilar
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问答题 简答题

请论述锥体外系统病变的症状与定位?
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