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單項(xiàng)選擇題

A vessel sounds one short blast. This signal indicates the vessel（）.

A.intends to alter course to starboard
B.intends to pass starboard to starboard
C.is altering course to starboard
D.intends to pass port to port

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單項(xiàng)選擇題

A vessel not under command sounds the same fog signal as a vessel（）.

A.towing
B.constrained by her draft
C.under sail
D.All of the above

單項(xiàng)選擇題

A vessel displaying three red lights in a vertical line is（）.

A.not under command
B.aground
C.dredging
D.constrained by her draft

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