单项选择题
The lubricating system for the cylinder walls is different from the bearings in that the oil for former one is supplied in （） while that for latter one is （）.
A.sufficient quantity； measured B.measured quantity；sufficient C.excessive quantity；sufficient D.the less quantity the better；the more the better
单项选择题 The lubricating pipes and dusts should be blown out with （）.
单项选择题 The lubricating oil is pumped from the drain tank, very often with （） in the suction line.
单项选择题 The lube oil in the bearings is drawn from a （）, usually located in the bedplate.
