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