单项选择题
A.75kcal B.65kcal C.55kcal D.45kcal E.35kcal
A.25kcal/(kg·D. B.30kcal/(kg·D. C.40kcal/(kg·D. D.44kcal/(kg·D. E.55kcal/(kg·D.
A.9:9:4 B.9:4:4 C.4:9:4 D.4:9:9 E.4:4:9