目标人群失访超过多少,即可造成偏倚() ["3%","5%","10%","13%","15%"]
影响声波传播的环境要素需调查建设项目所在区域的()。 ["年平均风速","主导风向","年平均气温","年平均相对湿度"]
以下腧穴中主治肘臂挛痛,臂麻手颤,头项痛,瘰疬的是()。 ["通里","少海","少府","灵道","阴郄"]
女性,45岁,诊断为子宫肌瘤,缺铁性贫血。给予铁剂治疗后Hb上升至130g/L。为保证机体有足够的储存铁,需继续铁剂治疗。期间需选择下列哪项指标监测体内储存铁的变化() ["血清铁","转铁蛋白","可溶性转铁蛋白受体","铁蛋白","总铁结合力"]
标志着恶性组织细胞病的病情已严重的骨髓象表现为() ["正常","增生明显活跃","增生极度活跃","增生活跃","增生差"]
脓液恶臭,普通细菌培养阴性的是()脓液有甜腥臭味的是()脓液量多、淡红色、稀薄的是()