单项选择题
He used to ____________________ anger. ()
未知题型He used to ____________________ anger. ()
The President ________ his intention to retire before t...
单项选择题The President ________ his intention to retire before the next election.[ ]nnouncedB.toldC
采用数据库镜像技术,主要是为了有效解决_________的问题。A、复制故障B、系统故障C、事务故障D、介质故...
单项选择题采用数据库镜像技术,主要是为了有效解决_________的问题。