单选题As you approach mile 427.6 AHP，you see on the right side a white buoy with orange bands and diamond. This buoy marks（）.Aa cable crossingBa sunken bargeCa submerged discharge pipeDthe end of a wharf
单选题
As you approach mile 427.6 AHP，you see on the right side a white buoy with orange bands and diamond. This buoy marks（）.
A
a cable crossing
B
a sunken barge
C
a submerged discharge pipe
D
the end of a wharf
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