单选题At night you observe a vessel ahead show three flashes of a white light. This signal indicates that the vessel ahead is（）.Ain distressBapproaching a bend in the channelCoperating astern propulsionDintending to overtake another vessel
单选题
At night you observe a vessel ahead show three flashes of a white light. This signal indicates that the vessel ahead is（）.
A
in distress
B
approaching a bend in the channel
C
operating astern propulsion
D
intending to overtake another vessel
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