A.1.16g/(kg·日) B.0.6g/(kg·日) C.0.8g/(kg·日) D.30g/日
A.1.16 B.1.2 C.0.8 D.0.6
A.65 B.70 C.75 D.80
A.20%~30% B.30%~50% C.50%~60% D.大于60%