单项选择题
A.low exhaust temperature
B.low exhaust pressure
C.mechanical knock in each cylinder
D.black or gray exhaust smoke
单项选择题 The bore of a diesel engine cylinder describes the （）
单项选择题 When one cylinder has a lower compression pressure and higher exhaust gas temperature than any of the other engine cylinders, which of the conditions listed will indicated?（）
单项选择题 Compared to a naturally aspirated diesel engine, a supercharged diesel engine has（）