慢性化脓性中耳炎单纯型耳聋多为() ["A．轻度传导性耳聋","B．重度传导性耳聋","C．感音神经性耳聋","D．混合性耳聋","E．以上均不对"]
左心房扩大的早期X线征象是() ["A．后前位右心下段双边或双房影","B．后前位左心缘第3弓突出","C．左前斜位左主支气管受压抬高","D．左前斜位心后缘向后下膨隆突出","E．右前斜位食管压迹加深"]
慢性化脓性中耳炎的治疗原则是() ["A．消除病因","B．控制感染","C．清除病灶，通畅引流","D．恢复听功能","E．以上均正确"]
骨缺血性坏死常发生于() ["A．舟骨","B．月骨","C．跟骨","D．股骨头","E．胫骨结节"]
单倍体(haploid)
铜蓝蛋白
