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问题 单项选择题

我国自主研发、独立运行的全球卫星导航系统是（）卫星导航系统。

A.天宫

B.神舟

C.北斗

D.长征

答案

参考答案：C

解析：北斗卫星导航系统是中国正在实施的自主研发、独立运行的全球卫星导航系统。

单项选择题

刘某因非法经营被工商管理机关处以500元罚款，他认为罚款数额过高，现在想提起诉讼，向律师咨询，律师告知他我国的行政诉讼审查行政行为一般只是对行政行为的合法性进行审查。我国行政诉讼审查具体行政行为合法性原则不包含以下哪层意思

A．只审查具体行政行为，不审查抽象行政行为

B．只审查具体行政行为的合法性，原则上不涉及合理性

C．只审查具体行政行为合法性为原则，以审查合理性为例外

D．以审查具体行政行为合法性与合理性为原则
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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 （66） 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 （67） , 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 （68） network layer, the router may be able to translate between the packet 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 （69） . As an example, gateways between Internet e-mail and X.400 e-mail must （70） the e-mail message and change various header fields.

A．syntax

B．semantics

C． language

D． format
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