平均生物剂量
参考答案：
是指在一批健康人身上测出每个人生物剂量，再求其平均值。
红细胞内在缺陷
A．缺铁性贫血B．再生障碍性贫血C．机械性溶血性贫血D．遗传性球形红细胞增多症引起的贫血E．失血后贫血
It took me a whole night to________the money that I needed to complete the project.[ ]
A. pick out
B. leave out
C. figure out
D. take out
