寒湿腰痛除主穴外,应加取() ["腰阳关","膈俞","申脉","肾俞","后溪"]
男性,35岁,膀胱内2cm大小结石,首选治疗方法是() ["药物溶石","切开膀胱取石","内镜下碎石取石","体外震波碎石","不予处理"]
最早用免疫学方法来预防的疾病是() ["天花","狂犬病","炭疽","伤寒","小儿麻痹"]
病例对照研究时非研究因素计数指标在各研究组中的均衡性至关重要,为了证明有可比性采用的检验方法通常是() ["χ2<\/sup>检验","t检验","方差分析","F检验","r相关分析"]
断口
旅游地意象要素及其功能?