单选题Air cocks, usually positioned at the （） in a circulating system, is used to get rid of the air in the system.Abending jointBexpansion tankCweldDthe highest point
单选题
Air cocks, usually positioned at the （） in a circulating system, is used to get rid of the air in the system.
A
bending joint
B
expansion tank
C
weld
D
the highest point
参考解析
解析：
暂无解析
相关考题：
Usually, emergency electricity supplies to_______on boardA.Cargo winchB.WindlassC.Steering gearD.Main air compressor
_______is usually driven by the engine camshaft and supplies pilot air to the cylinder air start valve.A.An air receiverB.An operating valveC.An automatic valveD.An air distributor
Air cocks, usually positioned at the_______in a circulating system, is used to get rid of the air in the system.A.bending jointB.expansion tankC.weldD.the highest point
When received the order "Finished With Engine", which of the following operations is wrong?A.stop the L.O pump, S.W pump, jacket water cooling pump immediatelyB.stop the F.O booster pumpC.engage the turning gear, turn the main engineD.open the main engine scavenge air trunk's drain cocks
Gale warnings are usually issued when winds of________8-9are expected.A.wind SpeedB.Air ForceC.wind VelocityD.Beaufort Foree
Which of the following statements is TRUE concerning the po column of the vmstat command？（）A、 The sys is high when po is high.B、 The po represents the number of page steals.C、 The low values usually indicate insufficient paging space.D、 The low values usually indicate sufficient memory for the load.
In international air cargo transportation， Specific Commodity Rates are usually lower than General Cargo Rates.
单选题The starting air system usually has （） to prevent starting if anything is not in order.Astop valvesBinterlocksCnon-return valvesDair vents
单选题The starting air system usually has （） to prevent starting if anything is not in order.Adrain cocksBvent valvesCcounteractsDinterlocks
单选题After "F.W.E" is given, the air system is shut down, the （） gear put in, all drains and indicator cocks opened, and the cooling water kept running.AsteeringBtimingCturningDrunning
单选题To obtain maximum efficiency, two stage air compressors are usually （）.Ahorizontally mountedBnever fitted with intake filtersCfitted with intercoolersDoperated in an unloaded condition at all times
单选题Which of the conditions listed may occur in an operating diesel engine if air pockets form within the cylinder head circulating water passages? （）AHydraulic stress and distortion will developBHot spots will developCFuel oil viscosity will increasedDAn increase in trapped deposits of scale and dirt
单选题Which of the following statements is TRUE concerning the po column of the vmstat command？（）A The sys is high when po is high.B The po represents the number of page steals.C The low values usually indicate insufficient paging space.D The low values usually indicate sufficient memory for the load.
单选题The pressurized air is usually cooled to increase the charge air （）.AviscosityBdensityCvelocityDelectricity
单选题On small, low pressure, air compressors, the cylinders are usually lubricated by the （）.Asplash methodBmechanical force feed lubricatorsCdetached sump methodDinternal cooling passages in the crankshafts and connecting rods
单选题The relative air pressure in the inlet manifold of a turbocharged diesel engine is usually（）Agreater than the average exhaust manifold pressureBless than the average exhaust manifold pressureCgreater at the turbine wheel than at the impellerDgreater at reduced engine speed
单选题After the order “（）” is given, the air system is shut down, the turning gear put in, all drains and indicator cocks opened, and the cooling water and lubricating oil systems kept running.AStand-by EngineBStop EngineCFinished With EngineDDead Slow Ahead
单选题Whilst the engine is turning, check to see that no water is leaking into the crankcase, scavenge air belt, or from （）.Aexhaust valvesBstarting valvesCfuel valvesDthe indicator cocks
单选题Which of the following statements represents the reason for rolling over a diesel engine with the cylinder indicator cocks open prior?（）ATo test the starting systemBTo remove air bubbles from the jacket waterCTo ensure that the lube oil system delivers pressureDTo ensure foreign material (water etc) is not present in the cylinders
单选题（） is usually driven by the engine camshaft and supplies pilot air to the cylinder air start valve.AAn air receiverBAn operating valveCAn automatic valveDAn air distributor
单选题Low pressure air is usually taken through （） or pressure regulators to a low pressure reservoir supplying a ring main through driers.Aglobe valvesBbutterfly valvesCgate valvesDreducing valves
判断题In international air cargo transportation， Specific Commodity Rates are usually lower than General Cargo Rates.A对B错
单选题Usually, emergency electricity supplies to on board（）ACargo winchBWindlassCSteering gearDMain air compressor
单选题（） usually helps to induce air movement to assist combustion.ACylinder coverBMain bearingCThe exhaust valveDThe piston movement
单选题Failure to open the diesel engine test cocks after a long period of shutdown, prior to starting may result in （）Aan air bound fuel systemBdamage to cylinder heads and pistonsCexcessive fuel injectionDexcessive air valve lift