单项选择题

The minimum amount of oxygen required to support life is（）

A.14 percent
B.15 percent
C.16 percent
D.17 percent

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单项选择题

What type of oil is not covered in the oil pollution law?（）

A.mineral oil
B.machinery oil being transferred for shipboard use
C.crude oil unrefined
D.normal bilge oil and water

单项选择题

The pollution prevention regulations state that slop oil and sludge that result as part of normal fueling operations should be disposed of by （）

A.discharging ashore into the sewer system
B.sealing in disposable plastic barrels aboard ship
C.discharging into a shore tank or stop barge
D.dumping into the ship’s bunker tanks

单项选择题

Which fire fighting agent has the greatest capacity for absorbing heat?（）

A.water
B.dry chemical
C.foam
D.CO₂