交流接触器启动时,通过线圈的启动电流往往为工作电流的十几倍。 发布时间:2017-07-03 03:23 │ 来源:www.tikuol.com 题型:判断题 问题: 交流接触器启动时,通过线圈的启动电流往往为工作电流的十几倍。
题型:判断题 --Mum, it's late. Why are you still here?--Dad hasn't come back yet. I for him.A. am waiting B. was waiting C. waited 查看答案