阿摩線上測驗
7. ______ is a compartment onboard ships which is capable of containing the sea water to improve the stability or draught when necessary.
(A) Ballast tank
(B) Ballast hold
(C) Bunker hold
(D) Double hull
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統計： A(353), B(48), C(24), D(17), E(0) #3407476
統計： A(353), B(48), C(24), D(17), E(0) #3407476
