33. The is a specified area designated by appropriate authority, where navigation is restricted in accordance with certain specified conditions.
(A) alert area
(B) restricted area
(C) prohibited area
(D) waiting area
答案:登入後查看
統計: A(9), B(63), C(16), D(5), E(0) #3414906
統計: A(9), B(63), C(16), D(5), E(0) #3414906