64.胰島素是由蘭氏小島的何種細胞分泌?
(A)α
(B)β
(C)γ
(D)δ
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統計: A(205), B(5492), C(171), D(42), E(0) #442624
統計: A(205), B(5492), C(171), D(42), E(0) #442624