单项选择题
A.white smoke in the exhaust
B.high exhaust gas pyrometer readings
C.sparks in the exhaust
D.blue smoke in the exhaust
单项选择题 The most practical way of detecting an overload in one cylinder of an operating large, low-speed ,main propulsion diesel engine is to （）
单项选择题 Diesel engine mufflers or silencers reduce the engine exhaust noise by （）
单项选择题 If a diesel engine were running at 20% overload with a smoky exhaust, you should（）