单项选择题
A.5g/L B.10g/L C.15g/L D.20g/L
A.10g/L B.20g/L C.30g/L D.40g/L
A.50g/L B.100g/L C.150g/L D.200g/L
A.每日咯血量在100毫升以内 B.每日咯血量在100—500毫升 C.每日咯血量达500毫升以上 D.一次咯血100—300毫升 E.一次咯血300—500毫升
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