[名词解释] 废用综合征

鼻咽癌最常见的病理分类为() ["A．高分化鳞癌","B．低分化鳞癌","C．未分化癌","D．高分化腺癌","E．低分化腺癌"] 脑血管病 测定新生儿听阈，做哪项检查最好() ["A．纯音侧听","B．耳声反射","C．声导抗","D．听性脑干电位","E．音叉检查"] MR对比剂是通过改变组织的何种特性而达到增强目的的() ["A．T1弛豫时间","B．T2弛豫时间","C．质子密度","D．TR","E．TE"] 小儿脑瘫 废用综合征