[问答题,简答题] 脊髓灰质炎临床分哪儿期?

硬管食管镜检查法可应用的患者体位错误的是() ["A．坐位","B．仰卧肩下垫枕","C．直立位","D．仰卧悬头位","E．半卧位"] 试述小儿常见出疹性疾病的皮疹鉴别要点。 气体分压定律(Dolton定律) 硬支气管检查的适应证包括() ["A．主动脉动脉瘤","B．严重心脏病和高血压","C．喉结核","D．急性喉阻塞","E．气管异物"] 脊髓灰质炎脊髓型瘫痪的特点？ 脊髓灰质炎临床分哪儿期?