单项选择题
A.65g/d B.75g/d C.85g/d D.95g/d E.105g/d
A.铬 B.锰 C.钒 D.锡 E.硼
A.2600kcal/d B.2400kcal/d C.2300kcal/d D.3200kcal/d E.1800kcal/d