The compressed air is admitted to each cylinder through a cam operated by starting air valve when the piston has just passed its （）.
- ABDC
- BTDC
- CBBDC
- DATDC
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1、For each person it is certified to car
For each person it is certified to carry，a lifeboat on an oceangoing passenger vessel must be provided with all of the following EXCEPT（）.A3 litres of waterB1 unit of provisionsC1 seasickness kitD1 life preserver
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2、The primary task of the compressed air
The primary task of the compressed air system is to deliver the starting air necessary for （）Astarting the MEBstarting the emergency electric alternatorCdriving the main turbineDdriving the turbocharger
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3、The purpose of compressing the air wit
The purpose of compressing the air within the cylinder of a diesel engine is to （）Aproduce the heat for ignitionBdecrease injection lagCincrease ignition delayDaid in exhausting burnt gase
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4、Compressed air is supplied by air comp
Compressed air is supplied by air compression to （）.Athe air receiversBthe starting valvesCthe cylinder coversDthe distributor
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5、The compressed air is supplied by （） t
The compressed air is supplied by （） to the air reservoirs.AcompressorsBforced fansCventilatorsDgenerator
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6、When starting air is admitted, a diese
When starting air is admitted, a diesel engine turns over very slowly without firingThe cause may be （）Aan obstruction in an cylinderBwater accumulation in some engine cylindersClow starting air pressureDlow scavenge air pressure