疼痛的神經(jīng)傳導(dǎo)主要依賴于哪種類型的神經(jīng)纖維？A. A類有髓神經(jīng)纖維B. B類有髓神經(jīng)纖維C. C類無髓神經(jīng)纖維D. D類神經(jīng)纖維
