A. 正确 B. 错误
A. 执行放疗计划 B. 靶区剂量的确定 C. 放疗患者的定位、拍片 D. 放疗患者的登记 E. 放疗模具制作
A. What a pity! B. It's nothing. C. It doesn't matter. D. Not at all.