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
最新試題
Gasoline fumes tend to（）.
The amount of LFG that may be loaded into a given tank is determined by（）.
What is the proper first aid for LPG in the eye? （）
What would you consult to determine the number of persons required on duty while loading a cargo of leaded gasoline on your tanker? （）
LFG tank and pipeline maintenance should include（）.
If you have a liquefied flammable gas barge in tow，which is NOT required of you with respect to the barge and its cargo? （）
The vapor pressure of a gas is the pressure necessary to keep it in a(n)（）.
The weight of liquefied petroleum gas vapors as compared to air is（）.
Before starting a gasoline engine on a motorboat，you should make sure for safety that（）.
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.