4) What is the acronym of "AOU" used in marine science stands for ?
(A) Additional Oxygen Uptake,
(B) Apparent Oxygen Uptake,
(C) Actual Oxygen Utilization,
(D) Additional Oxygen Utilization,
(E) Apparent Oxygen Utilization

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統計： A(0), B(1), C(2), D(0), E(0) #2788452