A.免疫功能不成熟 B.皮膚黏膜屏障功能差 C.臍部為開放性創(chuàng)口 D.白細(xì)胞吞噬功能差 E.胃酸低
A.30~60g/L B.30g/L C.60~90g/L D.90~120g/L E.120~145g/L