單項(xiàng)選擇題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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1.單項(xiàng)選擇題In a diesel engine, the time taken to heat the fuel particles, turn them into vapor, and bring about combustion is called （）
A.injection lag
B.ignition delay
C.compression
D.turbulence lag
2.單項(xiàng)選擇題Fuel is ignited in a diesel engine cylinder by （）
A.a spark plug
B.injectors
C.the heat of compression
D.increasing jacket water temperatures
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