对单电源线路的相间短路,应按什么原则装设保护装置? 发布时间:2021-02-11 17:51 │ 来源:www.tikuol.com 题型:问答题 简答题 问题: 对单电源线路的相间短路,应按什么原则装设保护装置?
题型:问答题 简答题 Between the two lectures _____ a break, _______ the audience can buy ice cream. A.is; whenB.are; whenC.are; which D.is; which 查看答案