阿摩線上測驗
3. When officers perform designated safety duty on board a vessel, the _________ should not be greater than 0.05%.
(A) urine level
(B) blood alcohol level
(C) alcohol in breath
(D) saliva level
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統計： A(0), B(0), C(1), D(0), E(0) #4053896
統計： A(0), B(0), C(1), D(0), E(0) #4053896
