过z轴和点(1,2,-1)的平面方程是()。 A.x+2y-z=6-0 B.2x-y 发布时间:2017-06-19 16:32 │ 来源:www.tikuol.com 题型:单项选择题 问题: 过z轴和点(1,2,-1)的平面方程是()。A.x+2y-z=6-0B.2x-y=0C.y+2z=0D.x+z=0
题型:单项选择题 — Which is the last day of the week?— __________________[ ]A. Friday. B. Sunday.C. Saturday.D. Monday.