大横杆接长的正确做法是()。A、搭接长度﹥1000mm,等距离设置3个旋转扣件 B、 发布时间:2017-06-27 21:51 │ 来源:www.tikuol.com 题型:多项选择题 问题: 大横杆接长的正确做法是()。A、搭接长度﹥1000mm,等距离设置3个旋转扣件B、宜用对接扣件连接C、相邻两根大横杆的接头不得同步或同跨D、相邻两根大横杆的接头间距应﹥500mm
题型:多项选择题 However busy we are, we need to take exercise. Not only _____ us keep healthy, it also stops us getting fat. [ ]A. it helps B. helps it C. it does help D. does it help 查看答案