双燃料系统(dual fuel system)

双燃料系统(dual fuel system)


相关考题:

If you suspect a diesel engine is misfiring due to air leakage into the fuel system, you should begin looking for the leak at theA.fuel line connections to the cylinder injection valvesB.gasket surfaces of the fuel oil filtersC.discharge fittings of the fuel injector pumpsD.suction side of the fuel oil transfer pump

Which of the following problems is the main source of fuel pump and injection system malfunctions?A.Improper lubricationB.Air in the fuel systemC.Coated fuel linesD.Excessive vibration

燃料控制系统(fuel control system)

燃料装卸和贮存系统 fuel handling and storage system

单选题Care and cleanliness are required when installing diesel fuel filters ().Ato prevent the fuel system from becoming air-houndBto prevent the fuel system becoming clogged with dirty particlesCboth of the aboveDto prevent the lubricating oil from leaking out of the filter element

单选题Which SELECT statement should you use to extract the year from the system date and display it in the format "1998"?()ASELECT TO_CHAR(SYSDATE,'yyyy') FROM dual;BSELECT TO_DATE(SYSDATE,'yyyy') FROM dual;CSELECT DECODE(SUBSTR(SYSDATE, 8), 'YYYY') FROM dual;DSELECT DECODE(SUBSTR(SYSDATE, 8), 'year') FROM dual;ESELECT TO_CHAR(SUBSTR(SYSDATE, 8,2),'yyyy') FROM dual;

单选题Which of the following problems is the main source of fuel pump and injection system malfunctions?()AImproper lubricationBAir in the fuel systemCCoated fuel linesDExcessive vibration

单选题If a tow-stroke/diesel engine is over-speeding due to leakage of lube oil into the cylinders, what should you do to stop the engine?()AMove the fuel control mechanism to the no fuel positionBBlock the fuel supply by closing the master fuel valveCShut off the fuel supply and block the flow of intake airDRelieve all pressure in the fuel system

单选题Each hose in the fuel transfer system for helicopter refueling must have a().Astatic grounding deviceBquick-disconnect nozzleCsplash guardDvapor recovery system

单选题Your vessel has run aground and upon taking fuel oil tank soundings, you find that a fuel tank level has increasedYou therefore should suspect ().Acondensation in the fuel tankBa crack in the hull portion of the fuel tankCa load of bad fuelDcontamination from the saltwater flushing system

单选题The main source of fuel injection system malfunctions is ()Aimproper adjustmentsBcontaminated fuelCcoated fuel linesDexcessive vibration

单选题The fuel from the bunker tanks must be treated by before entering the service tanks(), from where the fuel enters()Acentrifugal separators; the engine cylinderBoily water separators; the engine cylinderCoily water separators; the fuel supply systemDcentrifuges; the fuel supply system

单选题The term “proper metering”, as applied to a diesel fuel injection system, can be best defined as ().Adelivering the same quantity of fuel to each cylinder for each power stroke according to engine loadBmaintaining the metering adjustment for a reasonable period under all load conditionsCtiming fuel injection to obtain maximum power and good fuel economyDdistributing the fuel to all parts of the combustion chamber for proper combustion

单选题Thermostatic steam pressure reducing valves are used in the fuel oil service system to control the()Adouble bottom fuel oil tank temperatureBheater supply steam flowCpressure of the fuel supplied to the burnersDattemperator steam flow in the heater discharge circuit

单选题Permitting a diesel engine fuel oil day tank to run dry can cause ()Aoverheated injection pumpsBwater condensation in the cylindersCfuel dilution of the lube oilDair in the fuel system

单选题The major cause of fuel pump and injection system problems is ()Aimproper adjustmentsBcontaminated fuelCkinked fuel linesDexcessive engine vibration

单选题The fuel oil system for a diesel engine can be considered in two parts--the fuel supply and the () systems.Afuel treatmentBfuel combustionCfuel injectionDfuel separating

单选题Heat for igniting the fuel oil in the cylinder of a diesel engine is generated by the ()Aelectronic ignition systemBcompression of air by the pistonCfriction in the fuel injectorDfuel oil bearing system

单选题You would like to display the system date in the format "Monday, 01 June, 2001". Which SELECT statement should you use? ()ASELECT TO_DATE(SYSDATE, 'FMDAY, DD Month, YYYY') FROM dual;BSELECT TO_CHAR(SYSDATE, 'FMDD, DY Month, 'YYYY') FROM dual;CSELECT TO_CHAR(SYSDATE, 'FMDay, DD Month, YYYY') FROM dual;DSELECT TO_CHAR(SYSDATE, 'FMDY, DDD Month, YYYY') FROM dual;ESELECT TO_DATE(SYSDATE, 'FMDY, DDD Month, YYYY') FROM dual;

单选题Improper maintenance of the fuel oil burners in an automatically fired auxiliary boiler, could result in ()Aincreased fuel consumptionBincreased feed water consumptionCfuel pump failureDcombustion control system failure

单选题If you suspect a diesel engine is misfiring due to air leakage into the fuel system, you should begin looking for the leak at the ()Afuel line connections to cylinder injection valvesBgasket surfaces of the fuel oil filtersCdischarge fitting of the fuel injector pumpsDsuction side of the fuel oil tran

单选题The direct acting mechanical governor used with some small diesel engines, controls fuel flow to the engine by()Agovernor flyweight action on a pilot valve which controls fuel injectionBgovernor flyweight motion acting on fuel controls through suitable linkageCpositioning a butterfly valve in the fuel delivery system positioningDa servomotor piston attached to the fuel controls

单选题If a diesel engine runs out of fuel, you can expect trouble from ()Aoverheated injection pumpsBwater condensation in the cylindersCfuel dilution of the lube oilDair in the fuel system