单项选择题

The required number and type of hand portable fire extinguishers for staterooms on cargo vessels is（）.

A.one A-I
B.one B-I
C.one C-I
D.none required

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The purpose of inert gas systems aboard tank vessels is to（）.

A.allow sufficient oxygen in the tank to sustain life
B.prevent outside air from entering the tank
C.provide increase in cargo discharge pressure
D.comply with double hull pollution prevention regulations

单项选择题

The primary objective of a Ro-Ro vessel is to（）.

A.transfer containers without chassis
B.load the vessel with palletized cargo
C.transport vehicles
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The piping that routes an oil cargo from the manifold to underdeck pipelines is known as a （）.

A.cargo fill
B.line drop
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D.branch line