刀具耐用度是指一把刀具从开始用起,到完全报废为止的的切削时间 发布时间:2017-07-18 09:49 │ 来源:www.tikuol.com 题型:判断题 问题: 刀具耐用度是指一把刀具从开始用起,到完全报废为止的的切削时间
题型:判断题 We tried_______the people in Wenchuan when the earthquake happened. [ ]A. help B. helping C. to help D. to be helped 查看答案