单项选择题
A. Course again. B. Course two. C. Course more. D. Course line.
A. No steering. B. No steerage. C. A+B+D D. No answer.
A. Mind the wheel. B. Be careful about steering. C. Mind the helm. D. A+C
A. Starboard a bit sluggish. B. Port a bit sluggish. C. Port ten. D. Starboard slow.
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