問題詳情

16.「Wreck, depth unknown, which is not considered dangerous to surface navigation」- it will bemarked in the chart by:
(A)  
(B)  
(C) 
(D)

參考答案

答案:D
難度:非常困難0
統計:A(2),B(0),C(1),D(0),E(0)

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