单项选择题
A.turbocharger malfunction or failure B.crankcase exhauster overload C.overload on the intercooler D.obstruction in the engine cylinders
A.inspection covers should not be opened until the engine has cooled B.ventilation system should be continued in operation for one hour for cooling C.scavenge pump should be immediately secured to prevent loss of lube oil D.explosion covers should be opened slightly to provide extra ventilation
A.high flash point and high viscosity B.low flash point and high viscosity C.low heating value and high sulphur content D.high heating value and low sulphur content