关于纯铜铣削速度,说法不正确的是()。A、铣削速度要小 B、铣削速度应大 C、铣削速 发布时间:2019-07-11 00:07 │ 来源:www.tikuol.com 题型:单项选择题 问题: 关于纯铜铣削速度,说法不正确的是()。A、铣削速度要小B、铣削速度应大C、铣削速度可选用50~100m/minD、采用硬质合金铣刀,铣削速度可选用200m/min
题型:单项选择题 书面表达。根据所给信息,写一篇60-80词的短文。Kind of animal: panda Area: warm, wet places such as SichuanCharacteristics: shy, gentle, interesting In the past: many pandas in the east of ChinaNow: endangered (有灭绝危险的), try to save pandas Future:_____?______________________________________________________________________________________________________________________________________ 查看答案