单项选择题

Ullages are measured from（）.

A.the tank ceiling
B.the tank top bushing
C.the thievage mark
D.an above deck datum

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单项选择题

Ullage measurements are taken from the top of the liquid to（）.

A.the base of the expansion trunk
B.the base of the ullage port
C.a line scribed within the ullage port
D.an above-deck datum，usually the top of the ullage hole

单项选择题

To serve as a person in charge of transfer operations on board a self-propelled tanker，an individual must（）.

A.hold a valid officer's license for inspected vessels
B.be a certificated tankerman
C.be 30 years old
D.have a letter from the company stating his qualification

单项选择题

To determine which grades of cargo a tanker is permitted to carry you should（）.

A.refer to the vessel's Certificate of Inspection
B.examine the cargo tanks and fittings
C.ask the terminal supervisor or his representative
D.check the loading order