二尖瓣中度狭窄指瓣口面积() ["1~1.5cm2","1.5~2.5cm2","4~8cm2","2.5~3.5cm2","2~3cm2"]
采用液体吸收法,选用吸收装置时;不需要考虑的因素是() ["处理能力","压力损失","操作弹性","工作场合"]
对于二棕榈酸卵磷脂的生理意义描述哪些是正确的() ["维持肺组织的顺应性","维持肺泡的均匀稳定,防止肺泡萎陷","是肺泡弹性回缩的主要力量","具有对抗液体向肺泡渗漏的作用","肺成熟的标志"]
下列属于液体吸收法中的化学吸收的是() ["减压","加热","萃取","电解"]
二尖瓣中度反流指反流束面积() ["1~1.5cm2","1.5~2.5cm2","4~8cm2","2.5~3.5cm2","2~3cm2"]
试述放射性直肠炎和膀胱炎的表现和处理。