由下列哪种控制系统可以将最弱的回声从显示屏中消除掉() ["A．增益","B．TGC","C．排斥","D．灵敏度","E．以上均可"]
烧伤休克的原因有()组织水肿的原因有() ["A．血浆渗至第三间隙","B．血浆自创面丢失到体外","C．两者均有","D．两者均无"]
皮角(cutaneous horn)
以下关于老视的说法() ["A．是一种屈光不正","B．看远不清楚","C．是眼轴过短所致","D．远视力不正常","E．近视力明显降低"]
亲表皮现象（epidermotrophism）
股骨颈骨折后为什么常需手术治疗()嵌顿骨折常伴有()
