变异系数代表的是每一单位所承担的风险。()
参考答案:对
Which material can be thrown into the sea________on the nature of the material?[ ]
A. depended
B. depending
C. to depend
D. depends
患儿8个月,单纯母乳喂养,近一个月表情呆滞,活动减少,稀便。查体:面色苍白,虚胖,四肢震颤,肝肋下3cm,血常规:白细胞2.3乘以十的十二次方/L,血红蛋白90g/L,白细胞10乘以十的九次方/L,网织红细胞0.5%。诊断首先考虑
A.营养性缺铁性贫血B.营养性巨幼红细胞性贫血C.慢性感染性贫血D.溶血性贫血E.失血性贫血