71.鰻魚口腔剖檢檢查如圖示(箭頭),其病原最有可能為下列何者?
(A)sea lice
(B)argurus
(C)anchor worm
(D)leech
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統計: A(4), B(10), C(54), D(21), E(0) #3490779
統計: A(4), B(10), C(54), D(21), E(0) #3490779