單項選擇題

A vessel shall，so far as practicable，（）traffic lanes.

A.avoid cross
B.avoid to cross
C.avoid crossly
D.avoid crossing

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單項選擇題

A vessel is approaching from dead ahead.Both of her sidelights are visible and her range lights are in line.Which of the following could you do first（）.

A.Sound one blast of the whistle
B.Alter course to starboard
C.Construct a radar plot
D.Sound the danger signal

單項選擇題

When a pushing vessel and a vessel being pushed are rigidly connected in a composite unit，they shall be regarded as（）.

A.a tugboat
B.a sailing vessel
C.a power-driven vessel
D.a vessel propelled by machinery and under sail