单选题A vessel may use any sound or light signals to attract the attention of another vessel as long as（）.Awhite lights are not usedBred and green lights are not usedCthe signal cannot be mistaken for a signal authorized by the RulesDthe vessel signals such intentions over the radiotelephone
单选题
A vessel may use any sound or light signals to attract the attention of another vessel as long as（）.
A
white lights are not used
B
red and green lights are not used
C
the signal cannot be mistaken for a signal authorized by the Rules
D
the vessel signals such intentions over the radiotelephone
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