单选题Which of the following methods is normally used to lubricate bearings in a small high-speed diesel engine?（）ASplash lubricationBPressure lubricationCSight feed lubricatorsDMechanical lubricators
单选题
Which of the following methods is normally used to lubricate bearings in a small high-speed diesel engine?（）
A
Splash lubrication
B
Pressure lubrication
C
Sight feed lubricators
D
Mechanical lubricators
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