单选题() is the temperature at which a liquid fuel gives off sufficient vapor to form an ignitable mixture near its surface.ASetting pointBDew pointCFlash pointDLean point

单选题
() is the temperature at which a liquid fuel gives off sufficient vapor to form an ignitable mixture near its surface.
A

Setting point

B

Dew point

C

Flash point

D

Lean point


参考解析

解析: 暂无解析

相关考题:

The higher the temperature is, __________ the liquid evaporates. A、the fasterB、fasterC、the slower

The engine______smoke and steam.A.gives upB.gives awayC.gives inD.gives off

The lowest temperature at which the vapor formed from a liquid ignites and continues to burn steadily in the presence of an ignition source is called the( ). A.flash pointB.fire pointC.upper explosive limitD.lower explosive hmlt

When the fuel oil is burning in the combustion chamber, it _____.A.gives up large amount of heatB.gives off large amount of heatC.gives up large amount of steamD.gives off large amount of steam

The flash point of a liquid refers to the temperature ______.A.at which a liquid will give off inflammable(易燃的) vaporsB.at which a liquid will burn steadilyC.at which a liquid will explodeD.that a liquid must reach before it will flow readily

The(auto)ignition temperature is that temperature at which ______.A.No spark or flame is required to ignite gas or vaporB.A fuel begins to give off explosive vaporsC.A fuel if ignited will continue to burnD.A 1% mixture of the fuel with air will explode

Reid vapor pressure is ______.A.exerted by liquid cargo on the sides of a tankB.exerted by liquid cargo on a cargo hose bodyC.the lowest temperature and pressure that will cause a flammable liquid to give off vaporsD.a measurement of the amount of flammable vapors given off by a liquid at a certain temperature

Which instrument is suitable for determining the presence of explosive concentrations of fuel oil vapors in tanks ________.A.A flame safety lampB.A combustible gas indicatorC.A liquid cargo meterD.All of the above

单选题Reid vapor pressure is().Aexerted by liquid cargo on the sides of a tankBexerted by liquid cargo on a cargo hose bodyCthe lowest temperature and pressure that will cause a flammable liquid to give off vaporsDa measurement of the amount of flammable vapors given off by a liquid at a certain temperature

单选题When lighting off an auxiliary boiler, which of the problems listed could cause the burners to sputter?()Acold fuel oilBlow fuel oil pressureClow atomizing steam pressureDwater in the fuel oil

单选题The (auto)ignition temperature is that temperature atwhich().Ano spark or flame is required to ignite gas or vaporBa fuel begins to give off explosive vaporsCa fuel if ignited will continue to burnDa 1% mixture of the fuel with air will explode

单选题Which of the following can be obtained by means of an indicator card?()Athe peak pressure in a cylinderBthe temperature of the cooling waterCthe fuel consumptionDnone of the above

单选题The temperature () a liquid changes its state from liquid to gas depends upon the liquid itself and upon the pressure () it is subjected in the containing vessel.Aat which/to whichBfrom which/at whichCto which/from whichDin which/on which

单选题Which of the following terms would best describe the temperature at which a liquid boils at a given pressure?()ADegree of saturationBSaturation temperatureCSuperheated temperatureDDegree of superheat

单选题Which factor determines the ring dam size for a fuel oil, tubular bowl type, centrifugal purifier?()AThe viscosity off the fuelBThe quantity of water to be removed from the fuelCThe specific gravity of the fuelDThe quantity of dirt to be removed from the fuel

单选题The flash point of a liquid refers to the temperature ()Aat which a liquid will give off inflammable vaporsBat which a liquid will burn steadilyCat which a liquid will explodeDthat a liquid must reach before it will flow readily

单选题The lowest temperature at which the vapor formed from a liquid ignites and continues to burn steadily in the presence of an ignition source is called the ()Aflash pointBfire pointCupper explosive limitDlower explosive limit

单选题Which of the following statements is true concerning the cetane number rating of diesel fuel? ()AThe cetane number is obtained by comparing the fuel with cetane a colorless liquid hydrocarbonBThe higher the cetane number, the shorter the ignition lagCThe highest cetane number of fuel is 100DAll of the above

单选题When possible,what is the FIRST step in fighting an engine fuel-pump fire which results from a broken fuel line?()ASecure all engine room doors,hatches,and ventsBClose the fuel line valveCCheck the spread of the fire with foamDCast the barge off the wharf

单选题The lowest temperature at which fuel combustion becomes self-sustaining in the presence of a source of ignition, is defined as the ()Aauto-ignition pointBflash pointCburning temperatureDfire point

单选题Why is it important for fuel oil tanks not to be topped off at the inner bottom level when loading on a cold day?()AIncreased viscosity of the product needs higher loading pressure, which increases the chances of a spillBAir pockets may cause the fuel to bubble out of the ullage holeCThe temperature rise of the fuel will cause an overflowDFueling valve may become stuck closed and cause the fuel oil to spill before the valve can be opened

单选题Which of the listed set of conditions indicates early fuel injection timing?()ALoss of engine power and high exhaust temperaturesBHigher than normal firing pressure and low exhaust temperaturesCHigh fuel consumption and high exhaust temperaturesDLower than normal compression pressure and high exhaust temperature

单选题Which of the following statements is correct concerning the “flash point ” of a liquid?()AIt is lower than the ignition temperatureBIt is the temperature at which a substance will spontaneously igniteCIt is the temperature at which a substance, when ignited, will continue to bumDIt is the temperature at which the released vapors will fall within the explosive range

单选题Which of the listed statements is a characteristic of the liquid charged power element used with thermostatic expansion valves?()AAt the designed operating temperature, the liquid refrigerant charge has changed to a vaporBThe liquid refrigerant tends to collect at the bellows or diaphragm and reduces the valve sensitivityCThe sensing bulb is empty of liquid refrigerant charge at the designed operating temperatureDThe sensing bulb is never emptied of liquid refrigerant under normal operating conditions

单选题The flash point of a residual fuel oil should be used to determine the highest temperature to which oil may be heated ()Afor atomizingBfor centrifugingCin a storage tankDin the re-circulating line

单选题The temperature of the fuel oil received during bunkering operations is critical in determining the()Aexpansion space to leave in a tankBflash point at which the fuel will burnCtemperature to which the fuel must be heatedDrate at which the fuel can be pumped during transfer operations

单选题The lowest temperature at which a liquid gives off enough vapor to ignite in the presence of an ignition source is called its ().Aboiling pointBflash pointCviscosity pointDtoxic point