A . the engine was over filled
B . there might be a fuel leak
C . there might be a water leak
D . all of the above
[单选题]The crankcase of many diesel engines are kept under a slight vacuum by the ().A . scavenging action of the pistonB . piston type vacuum pump taking suction off a differential manometerC . gland exhausting manometerD . crankcase exhaust fa
[填空题] LOW OIL LEVEL COMPR CRANKCASE LSLL-731表示()。
[单选题]Regarding a Diesel engine crankcase, the general arrangement and installation should preclude the possibility of ()A . free entry of air to the crankcaseB . water entering the crankcase while engine wash-downs are being performedC . excessive oil lea
[单选题]_____ the engines, the diesel engine is ____ used engine on boardA.Between / more commonlyB.Among / the most commonlyC.Between / not more commonlyD.Among / not the most commonly
[单选题]E.xcessive oil foaming in the crankcase of a refrigeration compressor is most likely to occur when the compressorA.has run continuously for a long periodB.suction pressure is below normalC.oil level is below normalD.starts after a long idle period
[单选题]A diesel engine crankcase ventilation system ()A . prevents spark generationB . removes combustible gasesC . determines the level of combustible gasesD . provides inert gas generation in crankcase
[单选题]D.iesel engines are started by supplying into the cylinders in the appropriate sequence for the required direction.A.cooling waterB.compressing airC.compressed airD.cylinder oil
[单选题]() the engines, the diesel engine is() used engine on board.A . Between;more commonlyB . Among;the most commonlyC . Between;not more commonlyD . Among;not the most commonly
[单选题]Diesel engines are started by supplying () into the cylinders in the appropriate sequence for the required direction.A . cooling waterB . compressing airC . compressed airD . cylinder oil
[单选题]Lubricating systems for diesel engines are usually designed to initially provide lube oil to the engine ()A . camshaft beatingsB . main bearingsC . piston crownsD . cylinder wall