单项选择题
A.temperature of compression
B.atomization of the fuel
C.penetration of the fuel
D.all of the above
单项选择题 Persistent knocking of one cylinder of a diesel engine ceases when the fuel supply to that cylinder is securedThis problem may be a result of （）
单项选择题 Engine coolant accumulating in the diesel engine lubricating oil can result from a （）
单项选择题 The device used to limit engine torque at various engine speeds is called a （）