问题
单项选择题
A buoy with a composite group-flashing light indicates a(n)（）.
A.bifurcation
B.fish net area
C.anchorage area
D.dredging area
答案
参考答案：A
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A buoy with a composite group-flashing light indicates a(n)（）.
A.bifurcation
B.fish net area
C.anchorage area
D.dredging area
参考答案：A