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问题 单项选择题

大宗无包装的商品，检验时将整车引入专用地磅，然后扣除空车的重量，即可求得商品净重的重量验收方法是（）。

A.点件法

B.检斤验收法

C.理论换算法

D.整车复衡法

答案

参考答案：D

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.

A．syntax

B．semantics

C．language

D．format
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单项选择题

发生5人死亡事故，应由（）负责调查。

A.发生事故的施工单位所在地市级人民政府

B.发生事故的施工单位所在地市级人民政府

C.事故发生地的市级人民政府

D.事故发生地的省级人民政府
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