30. 下列證書中，哪一項不是國際公約規定必備之證書？
(A)National Oil Polluting Prevention Certificate
(B)Medicine Chest Certificate
(C)Deratting Certificate
(D)Safety Management Certificate

答案：登入後查看
統計： A(8), B(1), C(3), D(1), E(0) #2959414