麻醉期间低血压是指血压降低幅度超过麻醉前的() ["15%","20%","25%","30%","40%"]
以下哪种方法不属于放射性核素靶向治疗的范畴()。 ["RⅡ","受体介导放射性核素治疗","放射性反义治疗","基因转染介导的核素治疗","粒子植入"]
长期卧床易导致呼吸道感染,主要是由于分泌物沉积在呼吸道的什么部位引起() ["咽喉部","上部支气管","中部支气管","下部支气管","肺泡"]
角质形成细胞由以下哪项分化而来() ["外胚层","中胚层","内胚层","外胚层和中胚层"]
婴儿喉头位置相当于()。 ["C2~3平面","C3~4平面","C4~5平面","C5~6平面","C6~7平面"]
新型抗癫痫药有哪些?