单项选择题
A.110~150g/LB.110~160g/LC.120~15%/LD.120一160g/LE.120~170g/L
A.鼓室、咽鼓管、乳突窦和乳突小房B.耳蜗、前庭、骨半规管C.耳郭、外耳道、鼓膜D.锤骨、砧骨、镫骨E.蜗管、椭圆囊和球囊、膜半规管