49.下列何種神經的主要作用是感覺疼痛及温度改變?①A alpha fiber ②A beta fiber ③A delta fiber ④C fiber
(A)①②
(B)③④
(C)①③
(D)②④
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統計: A(32), B(929), C(68), D(32), E(0) #2969693
統計: A(32), B(929), C(68), D(32), E(0) #2969693