A.環(huán)狀軟骨B.杓狀軟骨C.楔狀軟骨D.小角軟骨E.甲狀軟骨
A.喉返神經(jīng)B.右迷走神經(jīng)C.左喉上神經(jīng)D.左側(cè)迷走神經(jīng)E.右喉上神經(jīng)
A.1%B.2%C.3%D.4%E.5%