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單項選擇題

Preferred channel marks are colored with（）．

A.black and green bands
B.red and green bands
C.red and yellow bands
D.yellow and green bands

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單項選擇題

Preferred channel marks are aids to navigation which all following marks other than（）．

A.channel junctions
B.bifurcations
C.fishing traps
D.wrecks or obstructions

單項選擇題

In the absence of a route leading from seaward，the conventional direction of buoyage generally follows（）.

A.an anti-clockwise direction around land masses
B.a clockwise direction around land masses
C.an anticlockwise direction around sea masses
D.a clockwise direction around sea masses

Preferred channel marks are colored with（）．

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Preferred channel marks are aids to navigation which all following marks other than（）．

In the absence of a route leading from seaward，the conventional direction of buoyage generally follows（）.

In the absence of a route leading from seaward，the conventional direction of buoyage generally follows（）.