单选题Most large, low-speed, main propulsion diesel engines use duplex lube oil strainer to （）Adecrease the time required between cleaningsBremoves all large and small foreign objectsCensure a positive flow of oil at all timesDensure that all lube oil has been treated twice
单选题
Most large, low-speed, main propulsion diesel engines use duplex lube oil strainer to （）
A
decrease the time required between cleanings
B
removes all large and small foreign objects
C
ensure a positive flow of oil at all times
D
ensure that all lube oil has been treated twice
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