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问题 单项选择题

（）必须遵守“定人定机”、“持证操作”制，严格按“四项要求”、“五项纪律”和设备操作维护规程等规定，正确使用与精心维护设备。

A、操作者；

B、工长；

C、机长；

D、设备主管领导；

答案

参考答案：A

单项选择题

幼儿园对幼儿实施的教育包括（）。

A．德、智、体、美、劳诸方面

B．智、德、体、心诸方面

C．体、智、德、美诸方面

D．美、心、体、智诸方面
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单项选择题

Traditional IP packet forwarding analyzes the （1）IP address contained in the network layer header of each packet as the packet travels from its source to its final destination. A router analyzes the destination IP address independently at each hop in the network. Dynamic （2） protocols or static configuration builds the database needed to analyze the destination IP address (the routing table). The process of implementing traditional IP routing also is called hop-by-hop destination-based（3） routing. Although successful, and obviously widely deployed, certain restrictions, which have been realized for some time, exist for this method of packet forwarding that diminish its （4）. New techniques are therefore required to address and expand the functionality of an IP-based network infrastructure. This first chapter concentrate on identifying these restrictions and presents a new architecture, known as multipleprotocol （5）switching, that provides solutions to some of these restrictions.

（3）是（）

A.anycast

B.multicast

C.broadcast

D.unicast
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