小儿极重度贫血的诊断指标是A. Hb > 120g/LB.Hb-90g/LC.Hb~60g/LD.

小儿极重度贫血的诊断指标是

A. Hb > 120g/L

B.Hb-90g/L

C.Hb~60g/L

D.Hb~30g/L

E. Hb