单选题The pressure differential across a diesel engine lube oil system duplex filter should be checked to （）Adetermine the need for filter cleaningBmeasure any change in oil viscosityCprevent damage to the filterDdetermine the need for batch filtration
单选题
The pressure differential across a diesel engine lube oil system duplex filter should be checked to （）
A
determine the need for filter cleaning
B
measure any change in oil viscosity
C
prevent damage to the filter
D
determine the need for batch filtration
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