压入式模柄与上模座呈()的配合,并加销钉以防转。
A、H7/m6
B、M7/m6
C、H7/h6
参考答案:A
You won't feel happy at school _______ you get on well with your classmates. [ ]
A. though
B. when
C. unless
D. because
( )属于城镇初始地籍调查的范围。
A.城市
B.建制镇
C.城镇郊区
D.集镇
E.独立工矿、企事业单位