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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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更多 “ The flash point of a petroleum product is an indication of its ______.A.viscosityB.pour pointC.volatilityD.lower explosive limit ” 相关考题
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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
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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
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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
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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
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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
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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
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What refers to the depth of a petroleum product in a tank ________．A.InnageB.OutageC.ThievageD.Ullage
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A fuel-air mixture below the lower explosive limit is too ______．A.Rich to burnB.Lean to burnC.Cool to burnD.Dense to burn
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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
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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
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单选题A combustible gas indicator meter is calibrated to read the percentage of（）.A
vapor to oxygenB
the flammable limit concentrationC
the autoignition concentrationD
the lower explosive limit concentretion
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单选题A fuel-air mixture below the lower explosive limit is too（）.A
rich to burnB
lean to burnC
cool to burnD
dense to burn
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单选题The designations A，B，C，D and E grades of cargo refer to the（）.A
degrees of quality of petroleum productsB
flash point range and Reid vapor pressure index of petroleum productsC
grades of crude oilD
pour point，color，and viscosity index of petroleum products
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单选题The cetane rating of diesel fuel is an indication of the（）A
ignition quality of the fuelB
calorific value of the fuelC
flash point of the fuelD
rate of fuel consumption
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单选题Which of the petroleum products listed has the lowest flash point?（）A
Hydraulic oilB
Lubricating oilC
Diesel oilD
Refrigeration oil
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单选题When considering the lowest fuel system operating temperature, （） are important.A
specific gravity or relative densityB
open flash point and closed flash point valuesC
higher calorific and lower calorific valuesD
cloud point and pour point values
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单选题Carbon dioxide flooding system is used for extinguishing fires because it reduces the concentration of oxygen in the air to（）.A
flashing pointB
combustion pointC
auto-ignition pointD
lower explosive limit
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单选题A petroleum liquid has a flash point of 135°Fahrenheit. This liquid is classed as a grade （）.A
B flammable liquidB
C flammable liquidC
D combustible liquidD
E combustible liquid
考题
单选题The flash point of a petroleum product is an indication of its（）A
viscosityB
pour pointC
volatilityD
lower explosive limit
考题
单选题Which of the following statements is correct concerning the “flash point ” of a liquid?（）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 bumD
It is the temperature at which the released vapors will fall within the explosive range
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单选题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
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单选题The explosive range of a mixture of flammable vapors is specified as a percentage of （）.A
flammable vapor by volume in airB
oxygen present to support combustionC
the temperature of the flash pointD
the lower limit of explosibility of the mixture
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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 （）.A
flash pointB
auto-ignition pointC
volatility pointD
upper explosive limit
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单选题The minimum concentration of a vapor in air which can form an explosive mixture is called the（）.A
auto-ignition pointB
flash pointC
lower explosive limit (LEL)D
threshold limit value (TLV)
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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（）.A
flash pointB
fire pointC
upper explosive limitD
lower explosive limit
考题
单选题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
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