【单选题】It's high time we () the lecture because everybody has arrived.
【简答题】电控柴油发动机怠速控制系统的主要控制功能有哪些?控制目的是什么?如何控制?
【单选题】—The frequent terrible coal mine accidents killed more than 1000 people in China last year. —_______.
【单选题】—The frequent terrible coal mine accidents killed more than 1000 people in China last year . — .
【简答题】The hall _______ (hold)1000 people.
【单选题】It is high time ______ him a severe lecture for being late often.
【判断题】金属焊接(切割)作业是特种作业,所以必须持证上岗独立作业( )。
【单选题】The meeting ended______his lecture on high education.
【简答题】《水力发电厂计算机监控系统设计规范》规定监控系统应具有事故追忆功能,启动事故追忆的事件主要为各类电气事故,进行事故追忆的量主要有哪些?