什么BGP协议信息是用来回复OPEN消息,确认邻居关系已经建立的?()
A.OPEN确认
B.UPDATE
C.NOTIFICATION
D.KEEPALIVE
参考答案:B, D
Thanks for _____ me to your party. [ ]
A. ask
B. asking
C. asks
小型湖泊与水库水深<10m时,每个取样位置取()个水样。
A.1
B.2
C.3
D.4