机械加工中刀具的选择取决于所确定的加工方法、工件材料、与所要求的加工精度、生产率和经济性、机床类型等无关。
参考答案：错
翻译下列句子。
1. 如果你不小心割了手应该怎么办？
What would you do if you cut yourself _____ _____?
2. 你应该用一块干净的布把割了的地方覆盖。
You should _____ the cut _____ a clean cloth.
3. 首先看看究竟有多糟。
First _____ _____ how bad it is.
4. 他的新书上个月出版了。
His new book _____ _____ last month.
5. 他在应对青少年方面很有经验。
He has a lot of experience _____ _____ teenagers.
The lectures delivered by excellent teachers across the province _____a fairly wide range about English teaching and I can’t sum them up in a few sentences.[ ]
A. conveyed
B. covered
C. considered
D. commanded
