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问题 单项选择题

质量记录是质量管理体系文件的组成部分，质量记录应以规定的文件形式和程序进行，并应有实施、验证、审核等人员的（）。

A．职务任命

B．岗位职责

C．操作要求

D．签署意见

答案

参考答案：D

选择题

—May I ask you ______ questions?

—Of course. [ ]

A. that

B. much

C. some

D. a little

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单项选择题

Frame Relay is simplified form of (51) , similar in principle to (52) , in which synchronous, frames of data are routed to different destinations depending on header information.
Packets are routed throught one or more Virtual Circuits known as (53) . Most Virtual Circuits are (54) , which means that the network provider sets up all DLCI connections at subscription time. (55) are also part of the Frame Relay specification. They privide a link that only lasts only as long as the session.

A．Datagram Switching

B．Datagram Routing

C．Packet Switching

D．packet Routing
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