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问题 单项选择题 B型题

可直接反映重症急性心衰患者左心功能的检查是（）

A.超声心动图

B.胸部X线

C.Swan-Ganz漂浮导管

D.心电图

E.放射性核素检查

答案

参考答案：C

单项选择题

The Border Gateway Protocol (BGP) is an interautonomous system. ___49___ protocol. The primary function of a BGP speaking system is to exchange network ___50___ information with other BGP system. This network reachability information includes information on the list of Autonomous System (ASs) that teachability information traverses. BGP-4 provides a new set of mechanisms for supporting ___51___ interdomain routing. These mechanisms include support for advertising an IP ___52___ and eliminate the concept of network class within BGP. BGP-4 also introduces mechanisms that allow aggregation of routes, including ___53___ of AS paths. These changes provide support for the proposed supernettting scheme.

51（）

A. confirmless

B. connectionless

C. answerless

D. classless
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单项选择题

建筑装饰施工员的工作程序中，施工前的流程按先后顺序应该是（）。

A、现场准备—技术准备—作业队伍组织准备—向施工班组交底

B、技术准备—现场准备—作业队伍组织准备—向施工班组交底

C、现场准备—技术准备—向施工班组交底—作业队伍组织准备

D、技术准备—现场准备—向施工班组交底—作业队伍组织准备
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