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问题 选择题

下列不属于联合国安全理事会常任理事国的是（　　）

A．日本

B．中国

C．法国

D．美国

答案

联合国是世界上规模最大和最有影响力的全球性国际组织，总部设在了美国的纽约．设有五个常任理事国，分别是中、法、美、俄、英．

故选：A．

单项选择题

用绳卡连接钢丝绳时，绳卡压板应（）。

A．放在绳头一边

B．放在长绳一边

C．交叉放置

D．随意放置
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单项选择题 共用题干题

An internet is a combination of networks connected by (1). When a datagram goes from a source to a  (2), it will probably pass many (3) until it reaches the router attached to the destination network. A router receives a  (4) from a network and passes it to another network. A router is usually attached to several networks. When it receives a packet, to which network should it pass the packet? The decision is based on optimization: Which of the available (5) is the optimum pathway?

空白（2）处应选择（）

A.user

B.host

C.city

D.destination
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