阿摩線上測驗
21. The ________ of tanks containing liquids such as fuel, water, slops, ballast and various bilges should be noted.
(A) composition
(B) temperature
(C) levels
(D) density
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統計： A(37), B(32), C(301), D(19), E(0) #3351373
統計： A(37), B(32), C(301), D(19), E(0) #3351373
