A.24-48h;48-72h B.12-24h;48-72h C.12-24h;24-48h
A.恢復(fù)胃腸道功能 B.促進(jìn)吸收 C.降低感染率 D.便秘或腹瀉
A.經(jīng)胃養(yǎng)耐受性差 B.高度誤吸風(fēng)險(xiǎn) C.胃潴留量多 D.以上都是