[名词解释] 管饲营养

择期手术 围手术期 没有肺泡的最小呼吸道是() ["A．呼吸性支气管","B．细支气管","C．终末支气管","D．肺泡管","E．肺泡囊"] 每个肺泡周围有() ["A．小静脉包裹","B．一厚层水膜包裹","C．肺Ⅱ型细胞包裹","D．小动脉包裹","E．致密的肺毛细血管包裹"] 自体输血 管饲营养