单项选择题

The Vessel can be（）in lawful trades between ports，anchorages or places where it is customary for similar size vessels to lie safely aground.

A.Permalloyed
B.Destroyed
C.Deployed
D.employed

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单项选择题

The use of sinking and dispersing chemical agents for removal of surface oil is（）.

A.the most common method used in the United States
B.too expensive for common use
C.generally safe to sea life
D.authorized only with prior approval of the Federal On-Scene Coordinator

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The sprinkler system of an enclosed lifeboat is used to（）.

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B.cool the engine
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The sea painter of a rescue boat should be led（）.

A.forward and outboard of all obstructions
B.forward and inboard of all obstructions
C.up and down from the main deck
D.to the foremost point on the vessel