單項選擇題If the circumstances of the case admit,any vessel()in a narrow channel.

A.shall have the liberty to anchor
B.shall avoid anchoring
C.shall moor to a buoy when necessary
D.shall keep anchoring


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2.單項選擇題In a crossing situation,the stand-on vessel should normally().

A.take action to cross ahead of the other vessel
B.take action to pass astern of the other vessel
C.maintain course and speed
D.change course and increase speed