金属焊接与切割的操作人员只要学会了操作技术就可以独立操作。() 发布时间:2019-01-15 06:27 │ 来源:www.tikuol.com 题型:判断题 问题: 金属焊接与切割的操作人员只要学会了操作技术就可以独立操作。()
题型:判断题 I can think of many cases___ _ students obviously knew a lot of English words and expressions but couldn't write a good essay. [ ]A.why B.which C.as D.where 查看答案