单项选择题
A.firing pressure
B.exhaust temperature from a particular cylinder
C.cooling water temperature
D.compression pressure
单项选择题 In a diesel engine, excessive cylinder liner wear will cause （） Ⅰ.increased blow-by Ⅱ.wear between the piston ring and groove
单项选择题 If the operating element of a thermostatic valve installed in a diesel engine cooling system malfunctions, it may result in （）
单项选择题 Why is the ring belt narrower in diameter than the skirt of a piston designed for a diesel engine?（）