6. Navigational warnings in inshore traffic zone are published according to __________ .
(A) the designed area
(B) the designated area
(C) the open area
(D) all area over the world
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統計: A(90), B(398), C(47), D(60), E(0) #2760423
統計: A(90), B(398), C(47), D(60), E(0) #2760423