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
Vessels having main engines arranged for air starting are to be provided with at least （）
A
one automatic drain serving both containers
B
two air starting containers of approximately equal size
C
one control air container and one starting air container
D
one additional means of starting the main engine
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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
Diesel engines obtain combustion air through turbo chargers，blowers，or ______．A.Air startersB.CarburetorsC.Natural aspirationD.Air receivers
单选题（）are increasingly used as main engine on merchant vessels, because they have a high Hp/Weight ratio.ASlow speed diesel enginesBMedium-speed diesel enginesCSteam enginesDGasoline engines
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When the order （） is received from the bridge, the main air stop valve in the starting air line should be shut.Astand-by engineBfull aheadCfinished with engineDfull away
单选题The main purpose of starting the diesel engine on air briefly is（）Ato inspect if the cylinder has the water leakageBto expel out the residual water/gas/oil from the cylinderCto check if fuel supply is normalDA and B
单选题Which of the following may cause that an engine doesnt turn on starting air?（）Atoo low starting air pressureBmain starting valve closedCneither A nor BDA and B
单选题The total starting air capacity required for reversible main engines is to be sufficient for at least （）.Asix consecutive startsBeight consecutive startsCten consecutive startsDtwelve consecutive starts
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Mist detectors used on large low-speed main propulsion diesel engines monitor and check for the presence of （）.Afuel oil vapor at the sludge tank ventBunburned fuel vapors in the scavenge air receiverClube oil vapors in the crank caseDlube oil vapors in the engine room
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Fire detecting systems on merchant vessels may be arranged to sense （）.AsmokeBrate of temperature riseCionized particlesDall of the above
单选题Which of the following may cause that an engine doesnt run on starting air?（）Atoo low starting air pressureBmain start valve closedCneither A nor BDA and B
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Cold weather starting of a diesel engine may be made easier by（）Adecreasing the compression ratioBusing a special fuel having a high ignition temperatureCincreasing the starting air supplyDheating the jacket water
单选题The booster pump, which supplies diesel oil to（） , should have a possibility of being powered by compressed air or by emergency power.Athe main enginesBthe auxiliary enginesCthe emergency generator engineDthe auxiliary engines and the main engine(s)
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After finished the engine, which of valves cannot be shut off by the duty engineer?（）Afuel valveBthe starting air valveCthe sea chestDthe main sea pump inlet valve
单选题On what do you depend having the air cooler of main engine chemically washed?（）Aincreased air pressure differenced before and aft air coolerBreduced exhaust temperature in all cylindersCreduced temperature difference between water inlet and outletDboth A and C
单选题Pump up the starting air reservoirs to their maximum pressure and （）the air reservoirs and air system.AopenBcloseCdrainDvent
单选题An electric heater built into some smaller diesel engines is used to （）.Araise lube oil viscosity for easier starting in cold weatherBincrease air inlet temperatureCincrease compression ratioDincrease jacket water temperature for easier starting in cold weather
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单选题Which of the listed types of starting systems is often used on large, low-speed, direct reversing, main propulsion diesel engines?（）AElectricBHydraulicCAirDAll of the above
单选题When the diesel is stopped, which of the following items is wrong?（）Akeep all systems in normally runningBthe main engine is stand-byCshut off the starting air bottle outlet valveDpay attention to the changes of the system parameters
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
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