Which statement is TRUE concerning inert gas systems on tankers ________．
A. Flue gases from the ship's boilers are used in some systems
B. The gas is helium
C. Using the system accelerates the rusting of the tanks
D. All of the above
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What best describes benzene ________．
A. Clear colorless liquid with an acrid odor
B. Clear colorless liquid with an aromatic odor
C. Brownish liquid，odorless
D. Brownish liquid，with an acrid odor
You are planning to use a crude oil washing system．What precaution must be taken with the
A. It must be debottomed and the level lowered by at least one meter
B. The oil in the source tank must be sampled for compatibility
C. The source tank must have been crude oil washed at least once in the past 150 days
D. The inert gas system must lower the oxygen content to a maximum of 12% oxygen in the tank
Your tanker is fully loaded，and you find that she is down slightly by the head．To adjust the trim，you may ______．
Add ballast aft
B. Load more cargo aft
C. Shift cargo aft
D. All of the above
You are on a vessel that carries liquefied gasses in bulk．The person on watch is required
A. Port of loading
B. Exact quantity on board
C. Name and address of consignee
D. Firefighting procedures
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