题目内容

环境卫生学的基本理论是()

A. 机体与环境在物质上的统一性
B. 环境因素对机体影响的作用机制
C. 机体对环境的适应能力
D. 环境因素对健康影响的复杂性
E. 环境中有益因素和有害因素对机体的综合作用

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患者男性,16岁,因持续高热1周来诊,临床怀疑伤寒沙门菌感染。治疗首选下列哪种药物()

A. 氯霉素
B. 环丙沙星
C. 头孢曲松
D. 多西环素
E. 头孢呋辛

交叉反应率(CRR)是属于下列哪种类型的质量指标()

A. 精密度
B. 准确度
C. 灵敏度
D. 特异性
E. 稳定性

根据材料回答下面的题目:{Page}Border Gateway Protocol (BGP)is inter-autonomous system ___(71 )__protocol. BGP is based on a routing method called path vector routing. Distance vector routing is not a good candidate for inter-autonomous system routing because there are occasions on which the route .with the smallest__(72)__count is not the preferred route. For example, we may not want a packet through an autonomous system that is not secure even though it is shortest route. Also, distance vector routing is unstable due to the fact that the routers announce only the number of hop counts to the destination without defining the path that leads to that____(73)___. A router that receives a distance vector advertisement packet may be fooled if the shortest path is actually calculated through the receiving router itself. Link____(74)__routing is also not a good candidate for inner-autonomous system routing because an internet is usually too big for this routing method. To use link state routing for the whole internet would require each router to have a huge link state database. It would also take a long time for each router to calculate its routing____(75)____using the Dijkstra algorithm.{Page}A.routingB.switchingC.transmittingD.receiving

A. table
B. state
C. metric
D. cost

治疗肝肾阴虚型阴痒,可在基本处方的基础上再加()。

A. 曲泉、太溪、照海
B. 太溪、照海、命门
C. 膈俞、血海、中极
D. 脾俞、足三里、三阴交
E. 太冲、肝俞、曲泉

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