63.下列痘病毒科中,何者是以飛沫(aerosol)傳染?
(A)cowpox
(B)vaccinia virus
(C)smallpox
(D)orf
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統計: A(51), B(268), C(648), D(39), E(0) #670866
統計: A(51), B(268), C(648), D(39), E(0) #670866