单项选择题
A.<10% B.<15% C.<20% D.<25% E.<30%
A.>1×109/L B.>2×109/L C.>3×109/L D.>4×109/L E.>5×109/L
A.<1% B.<2% C.<3% D.<4% E.<5%
A.70%~80% B.75%~80% C.80%~90% D.82%~94% E.96%~108%
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