A.as it warms up it becomes heavier than air
B.the way it reacts with sea water
C.the strong odor it produces
D.its low temperature causes frostbite or freezing
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A.It increases its volume
B.It reduces its volume
C.It has less product per volume
D.None of the above
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
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Gasoline tanks should be filled（）.
Where should the tops of vents from gasoline tanks terminate?（）.
Name one major advantage of transporting gas under refrigeration.（）
Before starting a gasoline engine on a motorboat，you should make sure for safety that（）.
What would you consult to determine the number of persons required on duty while loading a cargo of leaded gasoline on your tanker? （）
What is used to test a tank for oxygen content?（）
The vapor pressure of a substance（）.
The storage device for nitrogen-pressurized hydraulic fluid，which is used in closing the blowout preventers is called the（）.
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 tops of vents from gasoline tanks should terminate（）.