若直线3x-y=0与直线mx+y-1=0平行,则m=( ) A.3 B.-3 C.13 发布时间:2017-04-19 14:34 │ 来源:www.tikuol.com 题型:选择题 问题: 若直线3x-y=0与直线mx+y-1=0平行,则m=( )A.3B.-3C.13D.-13
题型:选择题 Between the two mounts___and they decide to build a ropeway(索道). A.lies a very deep valley B.does a very deep valley lie C.a very deep valley lies D.a very deep valley lays 查看答案