The flash point of a petroleum product is an indication of its ______.A.viscosityB.pour pointC.volatilityD.lower explosive limit
The flash point of a petroleum product is an indication of its ______.
A.viscosity
B.pour point
C.volatility
D.lower explosive limit
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The primary consideration of product management is to know the _____.A . probability of product's performance with specified parametersB . ability the product has to perform. its intended functionC . ability of a product to be produced within existing parametersD . functionality the product will provide over its useful lifeE . All of the above
27 The primary consideration of product management is to know the _____.A. probability of product's performance with specified parametersB ability the product has to perform. its intended functionC. ability of a product to be produced within existing parametersD. functionality the product will provide over its useful lifeE. All of the above
109 The primary consideration of product management is to know the _____.A. probability of product's performance with specified parametersB. ability the product has to perform. its intended functionC. ability of a product to be produced within existing parametersD. functionality the product will provide over its useful lifeE. All of the above
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
A petroleum liquid has a flash point of 85°F. This is a grade ______.A.B flammable liquidB.C flammable liquidC.D combustible liquidD.E combustible liquid
Which statement is TRUE concerning the flash point of a substance ________．A.It is lower than the ignition temperatureB.It is the temperature at which a substance will spontaneously igniteC.It is the temperature at which a substance，when ignited，will continue to burnD.It is the temperature at which the released vapors will fall within the explosive range
What refers to the depth of a petroleum product in a tank ________．A.InnageB.OutageC.ThievageD.Ullage
A fuel-air mixture below the lower explosive limit is too ______．A.Rich to burnB.Lean to burnC.Cool to burnD.Dense to burn
The minimum temperature required to ignite gas or vapor without a spark or flame being present is called ______．A.Flash pointB.Fire pointC.Autoignition temperatureD.Lower explosive limit
Combustible gas indicators measure the presence of combustible gas as a percentage of the____.A.flash pointB.upper explosive limitC.lower explosive limitD.fire point
单选题A combustible gas indicator meter is calibrated to read the percentage of（）.Avapor to oxygenBthe flammable limit concentrationCthe autoignition concentrationDthe lower explosive limit concentretion
单选题A fuel-air mixture below the lower explosive limit is too（）.Arich to burnBlean to burnCcool to burnDdense to burn
单选题The designations A，B，C，D and E grades of cargo refer to the（）.Adegrees of quality of petroleum productsBflash point range and Reid vapor pressure index of petroleum productsCgrades of crude oilDpour point，color，and viscosity index of petroleum products
单选题The cetane rating of diesel fuel is an indication of the（）Aignition quality of the fuelBcalorific value of the fuelCflash point of the fuelDrate of fuel consumption
单选题Which of the petroleum products listed has the lowest flash point?（）AHydraulic oilBLubricating oilCDiesel oilDRefrigeration oil
单选题When considering the lowest fuel system operating temperature, （） are important.Aspecific gravity or relative densityBopen flash point and closed flash point valuesChigher calorific and lower calorific valuesDcloud point and pour point values
单选题Carbon dioxide flooding system is used for extinguishing fires because it reduces the concentration of oxygen in the air to（）.Aflashing pointBcombustion pointCauto-ignition pointDlower explosive limit
单选题A petroleum liquid has a flash point of 135°Fahrenheit. This liquid is classed as a grade （）.AB flammable liquidBC flammable liquidCD combustible liquidDE combustible liquid
单选题The flash point of a petroleum product is an indication of its（）AviscosityBpour pointCvolatilityDlower explosive limit
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Combustible gas indicators measure the presence of combustible gas as a percentage of the（）.Aflash pointBupper explosive limitClower explosive limitDfire point
单选题The explosive range of a mixture of flammable vapors is specified as a percentage of （）.Aflammable vapor by volume in airBoxygen present to support combustionCthe temperature of the flash pointDthe lower limit of explosibility of the mixture
单选题Diesel fuel is relatively safe to handle due to its low volatility, but the fumes will self-ignite and continue to burn steadily if the fuel is heated to the （）.Aflash pointBauto-ignition pointCvolatility pointDupper explosive limit
单选题The minimum concentration of a vapor in air which can form an explosive mixture is called the（）.Aauto-ignition pointBflash pointClower explosive limit (LEL)Dthreshold limit value (TLV)
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A petroleum liquid has a flash point of 85°F. This is a grade （）.AB flammable liquidBC flammable liquidCD combustible liquidDE combustible liquid