单选题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 （）.Asufficient quantity； measuredBmeasured quantity；sufficientCexcessive quantity；sufficientDthe less quantity the better；the more the better
单选题
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
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