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【单选题】
(2014.4,2)慢性阻塞性肺疾病患者确定为不完全可逆的气流受限,其肺功能检查应满足:吸人支气管舒张剂后,FEV1/FVC小于
A.
0.7
B.
0.75
C.
0.8
D.
0.85
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