均质机曲轴使用的润滑油为（）。
A.58#
B.32#
C.220#
参考答案：C
Our class won a medal and the presentation ________on Thursday afternoon.
A．was happened
B．was taken place
C．was held
D．were on
《太平圣惠方》载方
A．113首B．6743首C．16834首D．61739首E．11899首
