单选题The rate of cylinder lubricating oil metered to each cylinder of a large low-speed main propulsion diesel engine is （）Athe same, whether at sea, or during maneuveringBadjusted during each hour of operation while at constant RPMChigher at sea than while maneuveringDlower at sea than while maneuvering
单选题
The rate of cylinder lubricating oil metered to each cylinder of a large low-speed main propulsion diesel engine is （）
A
the same, whether at sea, or during maneuvering
B
adjusted during each hour of operation while at constant RPM
C
higher at sea than while maneuvering
D
lower at sea than while maneuvering
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