三相交流供电线路在穿金属管时,为什么不能采用单相分管穿线? 发布时间:2019-02-01 09:16 │ 来源:www.tikuol.com 题型:问答题 简答题 问题: 三相交流供电线路在穿金属管时,为什么不能采用单相分管穿线?
题型:问答题 简答题 — I was riding along the street and all of a sudden, a car cut in and knocked me down.— You can never be________careful in the street.[ ]A. much B. very C. so D. too 查看答案