主动脉瓣关闭不全,最好的听诊体位是() ["左侧卧位","平卧位","坐位","Valsalva动作","坐位前倾屏气"]
据大量调查知,健康成年男性身高的均数为170.0cm,某医生在某山区随机调查了30名健康成年男性,其身高均数为168.9cm,标准差为9.7cm。欲估计该山区健康成年男性身高均数的95%置信区间,计算公式为() ["['

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鼓胀日久则累及() ["心","肺","胆","肾","胃"]
下列哪项不是气鼓的特征() ["嗳气或矢气则舒","腹部按之空空然","腹部膨隆","腹皮青筋暴露","叩之如鼓"]
寒湿中阻型聚证的最佳治疗方剂是() ["逍遥散","金铃子散","失笑散","木香顺气散","柴胡疏肝散"]
前牙外伤的根管()。感染严重年轻恒牙根管()。感染严重成人根管()。感染根管久治不愈()。渗出较多根管()。