单项选择题
A.I=(U+F+S) B.I>(U+F+S) C.I<(U+F+S) D.正相关 E.负相关
A.饥饿 B.进食低质量蛋白 C.摄入氮>排出氮 D.糖尿病 E.摄入氮<排出氮
A.30% B.10% C.8% D.5% E.3%
A.5%~8% B.10%~15% C.20%~30% D.35%~40% E.45%~50%
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