A.1:1B.10:1C.20:1D.50:1E.200:1骨髓增生减低时,成熟红细胞与有核细胞的比值是( )

A.1:1
B.10:1
C.20:1
D.50:1
E.200:1

骨髓增生减低时,成熟红细胞与有核细胞的比值是( )

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解析:

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