問題詳情

20. ____ is a specified area designated by appropriate authority, where navigation isrestricted in accordance with certain specified conditions.
(A) Precautionary area
(B) Restricted area
(C) Prohibited area
(D) Waiting area

參考答案

答案：B
難度：簡單0.888889
統計：A(0),B(8),C(0),D(0),E(0)