A.頰神經(jīng)和下牙槽神經(jīng) B.舌神經(jīng)和下牙槽神經(jīng) C.下牙槽神經(jīng) D.頰神經(jīng)和舌神經(jīng) E.頰神經(jīng)、舌神經(jīng)和下牙槽神經(jīng)
A.“四去三降一補”B.“三去一降一補”C.“三去二降—神”D.“四去一降一補”
A.高利潤區(qū)B.低利潤區(qū)C.趨于比較平緩的利潤