Compressed air is supplied by air compressors to______.A.the air receiversB.the starting valvesC.the cylinder coversD.the distributors
Compressed air is supplied by air compressors to______.
A.the air receivers
B.the starting valves
C.the cylinder covers
D.the distributors
相关考题：
Vessels having main engines arranged for air starting are to be provided with at least__.A.one automatic drain serving both containersB.two air starting containers of approximately equal sizeC.one control air container and one starting air containerD.one additional means of starting the main engine
In an operating diesel engine, which of the following conditions is an indication of a leaking air starting valve?A.Noise coming from that air starting valveB.Continuous operation of the starting air compressorC.Zero air pressure in the air starting systemD.Overheated starting air pipe to the cylinder head
Restrictions occurring in the small orifices(孔) of pneumatic control system components can be caused by ______.A.moisture in the compressed air supplyB.excessive dryness in the compressed air supplyC.pressure surging in the compressed air receiverD.insufficient lubrication of the system components
单选题Vessels having main engines arranged for air starting are to be provided with at least （）Aone automatic drain serving both containersBtwo air starting containers of approximately equal sizeCone control air container and one starting air containerDone additional means of starting the main engine
单选题The opening or closing of the cylinder starting valve is controlled by （）.Athe starting air distributorBthe cut-off valve on the air mainCthe main starting valveDthe air bottle control valve
单选题By far the greatest use is for diesel engine starting using air pressure of 25 bar or more provided by （）.Arotary compressorsBreciprocating compressorsCcentrifugal compressorsDscrew compressors
单选题Which of the following may lead to the engine NOT to start on air?（）Astarting air pressure too highBcorrect timing of starting air valvesCthree of the six starting valves stuckDthe turning gear disengaged
单选题Which of the following methods is used to prevent throttling of compressed air through the diesel engine air starting valves?（）AHolding the valve open for a long periodBIncreasing the starting air pressure usedCOpening the stating air valve quicklyDReducing the starting air valve size
单选题Restrictions occurring in the small orifices of pneumatic control system components can be used by （）Amoisture in the compressed air supplyBexcessive dryness in the compressed air supplyCpressure surging in the compressed air receiverDinsufficient lubrication of the system components
单选题Intercoolers installed on starting air compressors, reduce the possibility of（）Adust entering the high pressure stageBlube oil carbonizationCdischarge pulsationsDinter-stage vapor lock
单选题Air line lubricators are used in compressed air systems to lubricate （）.Athe suction and discharge valvesBtools and equipment served by compressed airCair line reducing valvesDall of the above
单选题When starting an engine, the compressed air enters the cylinder when the corresponding piston is in position of its（）Asuction strokeBcompression strokeCpower strokeDexhaust stroke
单选题The engine will fail to start unless （）.Athe pressure of the starting air is high enoughBthere is enough air in the air reservoirsCthe air is supplied into the cylinders in the appropriate sequenceDall of the above
单选题The compressed air is admitted to each cylinder through a cam operated by starting air valve when the piston has just passed its （）.ABDCBTDCCBBDCDATDC
单选题Compressed air is supplied by air compression to （）.Athe air receiversBthe starting valvesCthe cylinder coversDthe distributors
单选题（） in what position the engine stops there will always be at least one of the cylinders with its starting air valve open to admit compressed air to start the engine.ABecauseBOwing toCForDNo matter
单选题The compressed air is supplied by （） to the air reservoirs.AcompressorsBforced fansCventilatorsDgenerators
单选题Compressed air is used on board ship （）.Afor starting diesel enginesBin pneumatic control systemCin pneumatic toolsDAll the above are true
单选题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
单选题If an air compressor is used to supply compressed air to outlets throughout the engine room and on deck of a vessel, the system is known as the （）.Acombustion control air systemBsupply air systemCships service air systemDlow pressure deck air system
单选题An un-loader is installed on an air compressor to （）.Abypass the high pressure stage to the low pressure stage on 100% of the air compressors in serviceBprevent excessive inter-stage pressure buildupCcontrol compressor discharge pressureDremove all but the frictional load during starting
单选题Starting air for auxiliary engines may be taken directly from the main reservoirs or through （）.Aan auxiliary reservoirBa controlling air bottleCan emergency air compressorDa main air compressor
单选题Pump up the starting air reservoirs to their maximum pressure and （）the air reservoirs and air system.AopenBcloseCdrainDvent
单选题Which of the following problems can occur if you continually fail to drain off condensate from a starting air receiver?（）ACorrosion and eventual failure of the tankBGumming of the tank relief valvesCImmediate failure of components downstream of the compressed air systemDBoiling of the water oil mixture as pressure is reduced
单选题In an operating diesel engine, which of the following condition is an indication of a leaking air starting valve?（）Anoise coming from that air starting valveBcontinuous operation of the starting air compressorCzero air pressure in the air starting systemDoverheated starting air pipe to the cylinder head
单选题Explosions do occur （） caused by the ignition of oil or vapour gaining access from compressors or defective engine starting valves.Ain boiler drumsBin refrigerating plantsCin starting air pipesDin air coolers