单选题难度 5卫生高级职称儿内科小儿的合理膳食中蛋白质、脂肪、糖类3种营养素供能比例应为蛋白质(%)脂肪(%)糖(%)( )AA.12%15%30%40%40%50%BB.10%15%25%30%50%60%CC.10%15%25%35%45%55%DD.10%15%30%40%40%50%EE.15%25%25%35%45%55%