This illustration shows the correct method of securing a（）.

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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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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