铣键槽分层铣削法为每次铣削深度0.5-1.0mm以较大的进给量往返进行铣削，直至深度 发布时间：2018-02-19 13:40 │ 来源：www.tikuol.com 题型：判断题 问题： 铣键槽分层铣削法为每次铣削深度0.5-1.0mm以较大的进给量往返进行铣削，直至深度尺寸要求。
题型：判断题 改错题 It was Children's Day. Early in morning, I, together with my classmates, were going to the small river near our school. It was very dirty with rubbish in it. After we got to there,we did our best to pull all the rubbish out of the river, and it looks clean again. When we returned home, we were very tired, and we all felt quite happy. 1.______ 2.______ 3.______ 4.______ 5.______ 查看答案