問題詳情

39. Please refer to the chart as attached and answer the following three questions. Thesymbol at Q2 means:5d51290d7e6e0.jpg
(A) Obstruction or danger to navigation the exact nature of which is specified
(B) Obstruction or danger to navigation the exact nature of which is not specified
(C) Obstruction, depth know
(D) Obstruction, depth un-know



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