支气管肺炎的典型分布是() ["两肺弥漫分布","两肺均匀分布","沿肺纹理分布","两上肺","两肺外围"]
男性假两性畸形的发病机制不包括() ["外周组织或靶器官雄激素受体缺少","21-羟化酶缺失","17-羟化酶缺失","外周组织或靶器官雄激素受体功能异常","外周组织中5a-还原酶缺乏"]
患儿,3岁,久泻3个月不止,脾虚水旺,引动内风,为() ["阴竭阳脱","气阴两伤","疳证","慢惊重症","惊厥"]
成人肾静态显像99mTc-葡庚糖酸盐的注射剂量为() ["18.5~37MBq","37~74MBq","74~185MI3q","185~370MBq","370~555MBq"]
女,43岁。无症状,常规体检。查体:右侧下腹扪及包块,无压痛。辅助检查:泌尿系统B超提示双肾大小、形态正常;肾脏B超立位比卧位下降4cm。诊断最可能为() ["A.右肾肿瘤","先天性右肾异位","结肠肿瘤","右肾下垂","腹膜后肿瘤"]
什么是磁畴?什么是磁畴壁?为什么会形成磁畴?磁畴的数目由什么条件决定?