18.下列何種動物最易發生胎衣滯留(retained fetal membrane)?
(A)豬
(B)羊
(C)馬
(D)牛
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統計: A(115), B(38), C(87), D(1032), E(0) #855758
統計: A(115), B(38), C(87), D(1032), E(0) #855758