单选题A light signal consisting of three flashes means （）.AI am in doubt as to your actionsBMy engines are full speed asternCI desire to overtake youDI am operating astern propulsion
单选题
A light signal consisting of three flashes means （）.
A
I am in doubt as to your actions
B
My engines are full speed astern
C
I desire to overtake you
D
I am operating astern propulsion
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