使用千分尺测量时,先转动(),当测量面接近工件时,改用棘轮,指导棘轮发出吱吱声音为止 发布时间:2018-03-20 00:10 │ 来源:www.tikuol.com 题型:单项选择题 问题: 使用千分尺测量时,先转动(),当测量面接近工件时,改用棘轮,指导棘轮发出吱吱声音为止。A、棘轮盘B、微分筒C、手柄D、螺钉
题型:单项选择题 —— Look at the black clouds.It ______ soon. —— Sure.If only we _____out. A.is raining; didn’ t come B.is to rain; won’ t start C.will rain; haven’ t started D.is going to rain; hadn’ t come 查看答案