- Peter, do you know who _______ my dictionary?- Sorry, I don't know. I _______ it.

A．took away; didn't do

B．has taken away; didn't do

C．had taken away; haven't done

D．has taken away; hadn't done

在M2000上对某些告警执行清除操作，如下描述不正确的是（）

A.从网元到网管，全部把这些告警强制变为恢复状态

B.该操作与网元无关，仅是影响M2000本身的告警库。

C.如果网元断联，就会出现执行不成功。

D.如果这些告警的状态是已确认，那么清除成功后，这些告警就会从当前库转移到历史库