21.由Riemerella anatipestifer所引起的鴨病又稱為下列何者?
(A)Duck-X-disease
(B)New duck disease
(C)Old duck disease
(D)Riemer's disease
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統計: A(41), B(785), C(24), D(129), E(0) #864834
統計: A(41), B(785), C(24), D(129), E(0) #864834