视神经分为四段,其中最短的一段是() ["A.眼内段","B.眶内段","C.管内段","D.颅内段"]
下列哪些不是锥体外系统体征() ["静止性震颤","折刀样肌张力增高","慌张步态","面具脸","传导束型感觉障碍"]
《黄帝内经》汇总成编的大约时代是() ["春秋战国","战国秦汉","秦汉时期","西汉中后期","东汉前中期"]
婴幼儿时期慢性肾衰竭最常见的病因为() ["慢性肾小球肾炎","肾发育不良","狼疮肾炎","原发性肾病综合征","IgA肾病"]
碱性烧伤的特点为()。 ["使组织蛋白凝固","使组织坏死","能溶解脂肪和蛋白质,使细胞分解坏死","角膜上皮点状脱落","破坏内皮细胞的脂肪外膜"]
激光的物理特性有____、____、____、____。