50•卡爾森優養指數(CTSI)可用來判別水庫的水質優劣,下列何者處於「貧養」狀態?
(A)水庫A (CTSI = 30.00)
(B)水庫B (CTSI = 51.25)
(C)水庫 C (CTSI = 76.50)
(D)水庫D (CTSI = 94.16)

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統計: A(70), B(2), C(1), D(3), E(0) #1760895

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