单选题A possible cause for an individual piston to knock when at TDC on a slow-speed, two-stroke/cycle main propulsion diesel engine could be due to （）Aearly fuel injectionBexcessive bearing play within the running gearCoverloading of the cylinderDall of the above
单选题
A possible cause for an individual piston to knock when at TDC on a slow-speed, two-stroke/cycle main propulsion diesel engine could be due to （）
A
early fuel injection
B
excessive bearing play within the running gear
C
overloading of the cylinder
D
all of the above
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