单项选择题
A.carbon buildup in the exhaust manifold
B.overcooling of the exhaust manifold
C.eroded muffler baffle plates
D.high injection pressure
单项选择题 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 （）
单项选择题 In a diesel engine, the time taken to heat the fuel particles, turn them into vapor, and bring about combustion is called （）
单项选择题 Fuel is ignited in a diesel engine cylinder by （）