氧主要存在于机体的哪一部位() ["A．肺","B．血清","C．线粒体","D．白蛋白","E．红细胞"]
当营养支持时间超过2周时，静脉插管应选择________。
肺动脉压是体循环压的() ["A．相等","B．1/2","C．1/4","D．1/5","E．1/6"]
肠内营养最常见的并发症是胃肠道反应，其原因包括() ["A．营养液浓度过高","B．输注的速度过快","C．营养液温度过低","D．添加药物和营养液不相容","E．营养液受到污染"]
下列哪种反射有肺牵拉感受器与迷走神经传入纤维参与() ["A．Bainbridge反射","B．Herring-Breuer反射","C．Odis反射","D．Brudzinski反射","E．Moro反射"]
肠内营养的给予途径包括________和经鼻肠管或空肠造瘘。
