單項選擇題

A towing light is a yellow light having the same characteristics as a(n)（）

A.special flashing light
B.anchor light
C.sternlight
D.masthead light

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單項選擇題

A single towing light will be carried above a vessel’s sternlight（）.

A.only if she is towing astern
B.only if the tow exceeds 200 meters
C.at any time when towing
D.if the towing vessel is part of a composite unit

單項選擇題

A safe water daymark has what shape? （）

A.Triangular
B.Diamond
C.Circular
D.Octagonal

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