15. The _____ is an area shown on nautical chart within which navigation and/or anchoring is not allowed of.
(A). dangerous area
(B). restricted area
(C). prohibited area
(D). precautionary area
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統計: A(2), B(14), C(6), D(2), E(0) #1255006
統計: A(2), B(14), C(6), D(2), E(0) #1255006