搜题请搜索小程序“爱下问搜题”
问题 单项选择题

下列哪一项是孕激素的生理作用

A．使宫颈口闭合、黏液减少，变稠，拉丝度减少

B．使 * * 上皮增生和再化

C．增强子宫收缩力，增强子宫平滑肌对催产素的敏感性

D．加强输卵管节律性收缩的振幅

E．使乳腺管增生， * * 、乳晕着色

答案

参考答案：C

单项选择题

Border Gateway Protocol(BGP) is inter-autonomous system （1） 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 （2）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（3）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 （4）. 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 （5） using the Dijkstra algorism.

（2）是（）

A.path

B.hop

C.route

D.packet
查看答案
单项选择题 A1/A2型题

寒湿困脾证与湿热蕴脾证的共同症状是（）

A.身热不扬

B.脘腹胀闷

C.面黄不泽

D.口中黏腻

E.白带量多
查看答案