27糞便曝露於空氣中會變黑,是因為何種物質被氧化所造成?
(A)Stercobilin
(B)Urobilinogen
(C)Bilirubin
(D)Hemoglobulin
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統計: A(11), B(6), C(2), D(1), E(0) #2965045
統計: A(11), B(6), C(2), D(1), E(0) #2965045