用φ18mm的钻头，若钻孔的转速n=355r/min，试求钻削速度？（）A.20.0 发布时间：2017-04-16 18:45 │ 来源：www.tikuol.com 题型：单项选择题 问题： 用φ18mm的钻头，若钻孔的转速n=355r/min，试求钻削速度？（）A.20.065m/minB.21.066m/minC.32.065m/minD.20064.6m/min
题型：单项选择题 选词填空完成短文。play sports, Sometimes, student, name, milk, day, sometime, date, dinnerHello, My ___________ is Zhang Ming. I am a student at Willow School. My favourite ___________ is Monday. I often get up at 6: 30 in the morning. I have ___________ and bread for breakfast. Then I go to school at 7: 10. I do morning exercises at 7: 40. I eat lunch at 11: 45 at school. After school, I ___________ with my friends. In the evening, I eat ___________ at 7: 00. Then I do my homework. ___________ I watch TV. I go to bed at 9: 00. This is my day. What about yours? Zhang Ming 查看答案
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