有些消化道肿瘤患者不能口服药物，可选用哪些镇痛方法() ["A．直肠给药","B．静脉PCA","C．硬膜外PCA","D．神经阻滞","E．针灸"]
可造成纵隔向患侧移位的是() ["A．一侧性肺气肿","B．气胸","C．胸腔积液","D．广泛性胸膜肥厚","E．较大肺肿瘤"]
蛋白质的互补作用
营养素
呼吸系统X线检查的正确顺序是() ["A．CT－血管造影－胸片","B．血管造影－胸片－CT","C．胸片－CT－血管造影","D．CT－胸片－血管造影","E．胸片－血管造影－CT"]
必需氨基酸
