骨髓增生活跃,其有核细胞与成熟红细胞比值是 prefix="o" ns="urn:schemas-microsoft-com:office:office" ?xml:namespace>
A.
1 ∶ 1 prefix="o" ns="urn:schemas-microsoft-com:office:office"? ?xml:namespace>
B.
1 ∶ 10 prefix="o" ns="urn:schemas-microsoft-com:office:office"? ?xml:namespace>
C.
1 ∶ 20 prefix="o" ns="urn:schemas-microsoft-com:office:office"? ?xml:namespace>
D.
1 ∶ 50 prefix="o" ns="urn:schemas-microsoft-com:office:office"? ?xml:namespace>
E.
1 ∶ 200 prefix="o" ns="urn:schemas-microsoft-com:office:office"? ?xml:namespace>