最大车削直径200~500mm的车床旋转式尾座顶尖的跳动允差为().
A、0.005mm
B、0.010mm
C、0.015mm
D、0.020mm
参考答案:C
什么是一体化成长战略?其有哪些类型?
The police saw the woman _______ a bus and _______ a taxi.
A.get off …get on
B.get on … get off
C.get off …get into
D.get on … get into