单选题A vessel is fishing at anchor on the high seas. Which of the following day signals should she display if she has gear extending out over 150 meters horizontally from the vessel?（）.AA black ball in the forepart of her vesselBA black double frustum of a coneCA basket where best seenDA black cone point upwards
单选题
A vessel is fishing at anchor on the high seas. Which of the following day signals should she display if she has gear extending out over 150 meters horizontally from the vessel?（）.
A
A black ball in the forepart of her vessel
B
A black double frustum of a cone
C
A basket where best seen
D
A black cone point upwards
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