单项选择题
A.effective cylinder scavenging and cooling
B.constant pressure from the turbochargers
C.cooler operation of the exhaust system
D.effective constant pressure for turbocharger operation
单项选择题 Which of the listed diesel engine systems is likely to create the problem of a cylinder regularly misfiring?（）
单项选择题 When the normal compression ratio of a diesel engine is not very high, misfiring at light loads may be caused by （）
单项选择题 In a two-stroke/cycle diesel engine, the exhaust gases are expelled from the cylinder by the（）