A.mimimum oxygen content line
B.critical displacement line
C.critical dilution line
D.upper threshold limit
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A.to the top to expel all vapors from the tanks
B.to the top so the operator is certain how much fuel he has aboard
C.with only sufficient fuel for the planned trip so excess gasoline is not carried
D.to near the top with some space allowed for gasoline expansion
A.In open air
B.Inside cabins near the overhead
C.In the machinery space near the engine air intake
D.Underwater
A.97 times greater
B.94 times greater
C.10 times greater
D.2 times greater
A.Combustible gas indicator
B.Vapor indicator
C.Atmosphere analyzer kit
D.None of the above
A.5% or less
B.10% or less
C.15% or less
D.20% or less
A.they generate heat
B.they emit hydrogen
C.of the toxic fumes they emit
D.they recharge faster in a well ventilated space
A.attempt to isolate the fire from the LPG
B.cool the bottles or remove them from the fire area
C.see that the valves on all LPG bottles are closed
D.place insulating material over the bottles
A.nitrogen
B.oxygen
C.carbon dioxide
D.water vapor
A.settle near the bottom of the bilge
B.settle near the top of the bilge
C.settle evenly throughout all levels of the bilge by mixing with air
D.disperse to atmosphere
A.exposure limits
B.concentration limits
C.threshold limit values
D.substance limit values
最新試題
Gasoline vapor tends to collect（）.
Name one major advantage of transporting gas under refrigeration.（）
Where should the tops of vents from gasoline tanks terminate?（）.
What is used to test a tank for oxygen content?（）
Gasoline fumes tend to（）.
If you have a liquefied flammable gas barge in tow，which is NOT required of you with respect to the barge and its cargo? （）
Where is thicker plating usually found in the construction of integral tanks on a ship? （）
The amount of LFG that may be loaded into a given tank is determined by（）.
Storage batteries should be charged in a well ventilated area because（）.
The vapor pressure of a substance（）.