White smoke exhausting from a diesel engine can be caused by a ()
Black smoke exhausting from a diesel engine indicates()
If you observe smoke coming from the turbocharger of an auxiliary diesel engine, you should()
Black smoke coming from a boiler can be caused by ().
Black smoke exhausting from an operating diesel engine is an indication of poor combustion which may be caused by ()
White smoke exhausting from an operating diesel engine may indicate ()
High exhaust temperature and black smoke exhausting from an auxiliary diesel engine can be caused by ().
Nobody()to smoke in the cinema
White smoke exhausting from an operating diesel engine may indicate ().
White smoke issuing from the exhaust of an auxiliary diesel engine valve opening ()