Office _______ is just something that he plays at; the one thing that really interests him is golf.

A．ambition

B．enterprise

C．routine

D．Framework

设备润滑“五定”的含义是（）。

A、定点定期定时定质定人

B、定点定时定质定量定人

C、定点定时定质定期定人

D、定点定期定质定量定人