單項選擇題

A vessel may exhibit lights other than those prescribed by the Rules as long as the additional lights（）.

A.are not the same color as either side light
B.have a lesser range of visibility than the prescribed lights
C.do not impair the visibility or distinctive character of the prescribed lights
D.All of the above

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單項選擇題

A vessel is underway with a work stage rigged over the side. A seaman may work on the stage，but only when（）.

A.wearing a life jacket
B.wearing a safety harness secured to the stage
C.wearing both a life jacket and a safety harness secured to the stage
D.the vessel is not making way

單項選擇題

A vessel is to make a voyage between New York and San Juan，Puerto Rico，and return. The crew should be signed on（）.

A.Coastwise Articles
B.Foreign Articles
C.Intercoastal Articles
D.no articles

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A vessel may exhibit lights other than those prescribed by the Rules as long as the additional lights（）.

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A vessel is underway with a work stage rigged over the side. A seaman may work on the stage，but only when（）.

A vessel is to make a voyage between New York and San Juan，Puerto Rico，and return. The crew should be signed on（）.

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A vessel is underway with a work stage rigged over the side. A seaman may work on the stage，but only when（）.

A vessel is to make a voyage between New York and San Juan，Puerto Rico，and return. The crew should be signed on（）.