滚珠螺纹的牙型为( )。A.矩形 B.梯形 C.双圆弧 发布时间:2017-12-17 17:39 │ 来源:www.tikuol.com 题型:单项选择题 问题: 滚珠螺纹的牙型为( )。A.矩形B.梯形C.双圆弧
题型:单项选择题 —— Have you found the bike you lost yesterday? —— Yes, I've found ________ already.A.itB.thatC.the oneD.that one 查看答案