相邻电杆上导线悬挂高度相等时,导线最低点与两悬挂点之间连线的垂直距离称为()A.弧垂 发布时间:2017-07-01 04:59 │ 来源:www.tikuol.com 题型:单项选择题 问题: 相邻电杆上导线悬挂高度相等时,导线最低点与两悬挂点之间连线的垂直距离称为()A.弧垂B.档距C.爬电距离D.线间距离
题型:单项选择题 —How did you find the talk this morning? —______.A.By asking my studentsB.It was easy to findC.Very disappointingD.Just in time for it 查看答案