A.小于6g/d B.6g/d C.大于6g/d,小于10g/d D.沒(méi)有相關(guān)的參考值 E.越少越好
A.1200mg/d B.1500mg/d C.1800mg/d D.2000mg/d E.2200mg/d
A.38mg/d B.48mg/d C.58mg/d D.68mg/d E.78mg/d