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问题 单项选择题

在建设项目管理过程中，应根据管理目标的性质、特点和重要性，运用______等进行分析评估，将主动控制和动态控制结合起来。

A．项目管理技术
B．风险管理技术
C．组织管理技术
D．措施管理技术

答案

参考答案：B

选择题

实数a，b，c，d满足a＜b，c＜d，a+b＜c+d，ab=cd＜0，则a，b，c，d四个数的大小关系为（　　）

A．c＜a＜d＜b

B．c＜d＜a＜b

C．a＜c＜b＜d

D．a＜b＜c＜d
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单项选择题

Frame Relay is simplified form of (71) ,similar in principle to (72) , 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 (73) . Most Virtual Circuits are (74) ,which means that the network provider sets up all DLCI connections at subscription time. (75) are also part of the Frame Relay specification. They privide a link that only lasts only as long as the session.

A．Permanent Circuits

B．Permanent Virtual Circuits

C．Switched Virtual Circuits

D．Switched Circuits
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