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问题 单项选择题

一患者发烧，右侧胸闷，呼吸困难，对确诊胸腔积液进行哪项 检查最有意义？

A．血常规

B．胸部平片

C．胸部B超

D．结核菌素试验

E．痰查结核菌

答案

参考答案：C

单项选择题


(病例串型最佳选择题，2～3个题共用题干)

刘先生，创伤性休克后入住ICU，护士予抽血，血不易抽出，易凝固，皮肤有出血瘀点，紫斑，伤口

注射部位出血，你应考虑

A．呼吸窘迫综合症

B．急性肾功能衰竭

C．肝功能衰竭

D．弥散性血管内凝血

E．心功能衰竭
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单项选择题

One of the most widely used routing protocols in IP networks is the Routing Information Protocol (RIP)．RIP is the canonical example of a routing protocol built on the (1) algorithm．Routing protocols in internet works differ slightly from the idealized graph model．In an internet work，the goal of the routers to forward (2) to various networks．

Routers running RIP send their advertisement about cost every (3) seconds．A router also sends an update message whenever an update from another router causes it to change its routing table．

Routing protocols use different techniques for assigning (4) to individual networks．Further, each routing protocol forms a metric aggregation in a different way．RIP takes the simplest approach，with all link costs being equal (5) ．Thus it always tries to find the minimum hop route．Valid distances are 1 through 15．This also limits RIP to runing on fairly small networks．

3（）

A．10

B．30

C．60

D．180
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