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单选题
A combustible gas indicator is used to determine （）.
A
if there is sufficient oxygen to support life
B
the toxicity of flammable gases or vapors
C
the amount of CO2 present in flue gas
D
the presence of flammable gases or vapors in the air
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What is used to test a tank for oxygen content ________．A.Combustible gas indicatorB.Vapor indicatorC.Atmosphere analyzer kitD.None of the above
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You are testing a tank that contained gasoline by using a combustible gas indicator．Under testing，the tank sample caused the needle to move rapidly to 100 on the dial then fall to zero．What is the concentration of flammable gas ________．A.Less than the flammable rangeB.Within the flammable rangeC.Over the flammable rangeD.The explosimeter is defective and giving a false reading
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An oxygen indicator can be used to determine if there is ______.A.sufficient oxygen in a compartment to support lifeB.combustible gases presentC.hyfrogen gases presentD.All of the above
考题
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
考题
Deficient oxygen content inside a chain locker can be detected with ______.A.litmus paperB.a combustible gas indicatorC.an oxygen breathing apparatusD.an oxygen indicator
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单选题What is NOT a responsibility of the tankerman in charge of loading an unmanned tank barge? （）A
Enforcement of smoking restrictionsB
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单选题Diesel engine exhaust gas temperatures can be used to determine individual cylinder （）.A
performanceB
horsepower outputC
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scavenge effect
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check cylinder lubrication prior to starting engineB
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cause of salt contaminationB
location of salt water contaminationC
chemical makeup of feed-waterD
level of alkalinity in condensate
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单选题A pumproom is suspected of accumulating gases after a ventilation machinery breakdown. Where should the combustible gas indicator case be placed when testing the pumproom atmosphere for combustible gases? （）A
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In the middle level of the pumproomC
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单选题Deficient oxygen content inside a chain locker can be detected with（）.A
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an oxygen indicator
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单选题By comparing the exhaust gas temperature of each cylinder, the operator can determine if the load is balanced throughout the engine. The device most commonly used is a（）A
tachometerB
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单选题Before entering a fuel tank that has been cleaned, it should be checked with an oxygen indicator and a/an（）.A
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flame safety lampC
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单选题A combination combustible gas and oxygen indicator is an instrument that measures the（） of both combustible gas and oxygen; each is indicated on a separate meter.A
purifiesB
combinationsC
concentrationsD
filters
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单选题Combustible gas indicators measure the presence of combustible gas as a percentage of the（）.A
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prevents spark generationB
removes combustible gasesC
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connect the pressure indicator pressureC
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单选题Before entering a tank，always check the vapor content（）a combustible gas indicator.A
withB
byC
ofD
for
考题
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tachometerB
pyrometerC
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calorimeter
考题
单选题An oxygen indicator can be used to determine if there is（）.A
sufficient oxygen in a compartment to support lifeB
combustible gases presentC
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All of the above
考题
单选题An oxygen indicator can be used to determine if there is（）.A
sufficient oxygen in a compartment to support lifeB
combustible gases presentC
hydrogen gas presentD
All of the above
考题
单选题An inert gas system on a tanker should be used to（）.A
prevent the generation of flammable or combustible gas in tanksB
blow out cargo lines to prevent the build up of gas concentrationsC
dilute tank atmospheres to keep gas concentrations below the lower explosive limitD
prevent fires in the pumproom by continually displacing flammable vapors
考题
单选题An inert gas system on a tanker should be used to（）.A
prevent the generation of flammable or combustible gas in tanksB
blow out cargo lines to prevent gas concentrationsC
dilute tank atmospheres to keep gas concentrations below the lower explosive limitD
prevent fires in the pumproom by continually displacing flammable vapors
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