RIP协议引入路由抑制机制的作用是().
A.节省网络带宽
B.防止网络中形成路由环路
C.将路由不可达信息在全网扩散
D.通知邻居路由器哪些路由是从本路由器学来的
参考答案:B
At last, he __________ some good ideas about their summer vacation.[ ]
A. thought about
B. came up with
C. fixed up
D. put up
当一侧水位计放水阀内漏时,会使两侧水位计()
A.一样
B.偏差增大
C.正常
D.平行