问题
单项选择题
在铣削加工中,为了使工件保持良好的稳定性,应选择工件的()作为主要定位面。
A.任意面
B.所有面
C.最小面
D.最大面
答案
参考答案:D
在铣削加工中,为了使工件保持良好的稳定性,应选择工件的()作为主要定位面。
A.任意面
B.所有面
C.最小面
D.最大面
参考答案:D
根据句意及首字母提示补全单词。 |
1. In the f______ people will have fewer and fewer cars. 2. My father usually w ___ up early. 3. My brother wants to be an a_______ when he grows up. He hopes to fly to the moon. 4. Mrs. Green always d_______ herself very nicely when she goes to work. 5. He _______ a letter to his father last week. |