【判断题】根据《国家电网公司变电运维管理规定》,误拉隔离开关时,当主触头刚刚离开即发现电弧产生时应立即合回,查明原因。如隔离开关已经拉开,禁止再合上。
【判断题】Bill and Laurent are talking about business during the meal. Watch the video clip and decide whether the following statements are true or false. 1. Laurent needs to find a new supplier to replace Bi...
【简答题】Watch the video clip and choose the true statement. A) Christine completed the challenge without ever falling off her skis. B) Christine attempted to cross the Channel but failed. C) Christine cross...
【判断题】操作隔离开关时,一旦发生带负荷误分隔离开关,在刚拉闸时即发现电弧,应立即合上,停止操作。
【判断题】操作隔离开关时,一旦发生带负荷误分隔离开关,在刚拉闸时即发现电弧,应立即合上,停止操作。
【多选题】误拉隔离开关时,当主触头刚刚离开即发现电弧产生时应()合回,查明原因。如隔离开关已经拉开,()再合上。
【单选题】Directions: Alice comes to see Mr. Burner. Watch the video clip and choose the correct answer to each question. u05p41.mp3: (1) What does Mr. Burner's company mainly deal with?