A.It increases its volume
B.It reduces its volume
C.It has less product per volume
D.None of the above
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A.exclusion of all sand and solid matter
B.cleaning with clean fresh or sea water
C.examination for fractures and pitting
D.All of the above
A.that
B.which
C.who
D.these
A.Make periodic inspections of bilges
B.Keep the barge under constant surveillance
C.Have a properly certificated tankerman or at least one licensed officer on board the towing vessel
D.Verify ullage readings
A.above the floor plates of the bilges
B.above the carburetor level
C.at the lowest point of the bilge areas
D.at no particular level
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
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The shut off valve at the gasoline tank which can be operated from outside the tank space （）.
When fighting fires in spaces containing bottles of LPG (liquefied petroleum gas)，you should （）.
The vapor pressure of a gas is the pressure necessary to keep it in a(n)（）.
What would you consult to determine the number of persons required on duty while loading a cargo of leaded gasoline on your tanker? （）
It should be noted（）the use of synthetic mooring ropes able to produce sparks by their manipulation is absolutely forbidden on board petroleum tankers and LPG or LNG carriers，or any vessels carrying inflammable substances.
Butadiene，inhibited，is labeled as a（）.
The storage device for nitrogen-pressurized hydraulic fluid，which is used in closing the blowout preventers is called the（）.
Name one major advantage of transporting gas under refrigeration.（）
Which is NOT a safety precaution to be observed during the loading of LFG?（）
To determine the pressure and temperature limitations under which LFG is required to be transported on a barge，you should look at the（）.