单选题If your radiotelephone fails while underway,（）.Ayou must visually signal oncoming vesselsByou must immediately tie up in the nearest port until the radiotelephone is repairedCyou must anchor until the radiotelephone is repairedDthe loss of the radiotelephone must be considered in navigating the vessel
单选题
If your radiotelephone fails while underway,（）.
A
you must visually signal oncoming vessels
B
you must immediately tie up in the nearest port until the radiotelephone is repaired
C
you must anchor until the radiotelephone is repaired
D
the loss of the radiotelephone must be considered in navigating the vessel
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