A.nitrogen
B.oxygen
C.carbon dioxide
D.water vapor
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A.5% or less
B.10% or less
C.15% or less
D.20% or less
A.97 times greater
B.94 times greater
C.10 times greater
D.2 times greater
A.over an electrically heated platinum filament
B.where it is mixed with nitrogen
C.where it is ignited by a sparking device
D.where its specific gravity is measured
A.combustible liquid
B.flammable gas
C.flammable liquid
D.flammable solid
A.the gasoline tank is full
B.the bilges，cabins，etc. are thoroughly ventilated
C.you have fresh water on board
D.Each of the above is followed
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If you have a liquefied flammable gas barge in tow，which is NOT required of you with respect to the barge and its cargo? （）
Gasoline tanks should be filled（）.
The primary hazard of liquefied petroleum gas and liquefied natural gas is（）.
To determine the pressure and temperature limitations under which LFG is required to be transported on a barge，you should look at the（）.
The storage device for nitrogen-pressurized hydraulic fluid，which is used in closing the blowout preventers is called the（）.
Gasoline vapor tends to collect（）.
The weight of liquefied petroleum gas vapors as compared to air is（）.
The tops of vents from gasoline tanks should terminate（）.
The vapor pressure of a gas is the pressure necessary to keep it in a(n)（）.
The vapor pressure of a substance（）.