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1. For aerated mixing vessels in an aqueous solution, the mass transfer coefficient (kL) co-relating power consumption (Pm) and fermenter volume (V) can be expressed as
(A): kL ∝ (Pm/V)
(B): kL ∝ (Pm/V)0.33
(C): kL ∝ (Pm/V)0.50
(D): kL ∝ (Pm/V)0.66
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