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单选题
When started, a complete oily water separating unit is first filled （）The oily water mixture is then pumped through the inlet pipe into the coarse separating compartment.
A
with dirty water
B
with clean water
C
by oily water
D
by mixed water
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单选题Upon arrival at a port, a vessel is not allowed （） her ballast water, tanker washings or bilge water and other oily water at will.A
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a spare pump in case the main pump is inoperativeD
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The capacity of sludge and bilge water holding tankC
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考题
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考题
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考题
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考题
单选题（）are used to ensure that ships don’t discharge oil when pumping out oily water from any oil contaminated space.A
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考题
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too little seal waterB
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考题
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考题
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考题
单选题In which case is the IOPP Certificate of an inspected vessel NOT invalidated? （）A
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