镶齿铣刀刀体是结构钢,刀齿是高速钢,直径较大的()都采用了这种结构。
A.立铣刀
B.三面刃铣刀
C.锯片铣刀
D.套式面铣刀
E.囱柱铣刀
F.盘铣刀
参考答案:B, D
用所给词的正确形式填空
1.Today is her __________(eight) birthday.
2. This is __________(I) mother.
3. Let's __________(watch) TV.
4. That __________(sound) good.
5. Do you __________(like) basketball?
6. I have a pair of __________(sock).
7. Henry __________(have) a penfriend.
8. These are my __________(photo).
9. September is the __________(nine) month of the year.
10. There __________(be) a baseball and some books on the desk.
While he plays extremely well in individual sports, James is thought to co-operation in team events.[ ]
A. acquire
B. reduce
C. lack
D. overcome