根据牙与下颌升支及第二磨牙的关系,阻生智齿全部位于下颌支内时称为() ["第Ⅱ类阻生","第Ⅲ类阻生","颊侧移位","低位阻生","倒置阻生"]
不属于非典型急性链球菌感染后肾炎的临床类型是() ["无症状型肾炎","肾外症状型肾炎","膜性肾炎","肾病综合征型","以上均不是"]
高血压患者,伴左室肥厚,最佳的降压药物是() ["钙拮抗剂","ACEI","β受体阻滞剂","利尿剂","α1受体阻滞剂"]
重症肌无力常合并以下哪种疾病?() ["小细胞肺癌","甲状腺功能亢进","多发性肌炎","胸腺增生或胸腺瘤","系统性红斑狠疮"]
牛奶及其奶制品中哪种元素含量较少,且生物利用率低() ["钙","磷","镁","钾","铁"]
简述偏瘫患者的手杖步行方法。