单项选择题
A.大叶性肺炎B.哮喘C.肺水肿D.胸腔积液E.气胸
A.5minB.10minC.1minD.15minE.20min
A.20-30cmH2OB.30-40cmH2OC.10-20cmH2OD.40-50cmH2OE.50-60cmH2O
A.防止引流管打折B.重建胸腔负压C.保持引流管通畅D.防止引流液逆流E.预防感染
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