阿摩線上測驗
51 Where _____ have to be crossed, this should be done as nearly as practical at right angles.
(A)inshore traffic zones
(B)gun exercise areas
(C)prohibited areas
(D)traffic lanes or traffic separation zones
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統計： A(0), B(2), C(2), D(7), E(0) #3221109
統計： A(0), B(2), C(2), D(7), E(0) #3221109
