--- Did you and your friends ride to the mountain last Sunday?

--- Yes. ________ we had !

A．How good time

B．What a good time

C．What good time

D．How fun

在网络管理协议SNMP参考模型中，采用的是管理者-代理模型，每个代理节点都有一个【 】用于保存代理能收集的信息。