单项选择题
A.10~15g B.15~30g C.30~40g D.35~40g E.45~50g
A.10% B.17.5% C.0.9% D.3.5% E.7.5%
A.2mmol/L B.3mmol/L C.6mmol/L D.5mmol/L E.7mmol/L