单选题Prior to starting, the purpose of turning over a main propulsion diesel engine with the cylinder test cocks open, is to （）Atest the starting systemBremove condensation from the cylindersCcheck the compressionDcheck for proper lube oil pressure
单选题
Prior to starting, the purpose of turning over a main propulsion diesel engine with the cylinder test cocks open, is to （）
A
test the starting system
B
remove condensation from the cylinders
C
check the compression
D
check for proper lube oil pressure
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