对于慢性阻塞性肺疾病(COPD)的气流阻塞,下列各项指标、检查或表现中最有诊断价值的是
A 桶状胸 B
ECG低电压 C
X线胸片 D
血气分析 E
第一秒用力呼气容积与用力肺活量比(FEV<img border="0" alt="" src="https://tuku.weimei168.com/uploads/upimg/20240806/12862020_0.gif">/FVC%)及第一秒用力呼气容积实测值与预计值比(FEV<img border="0" alt="" src="https://tuku.weimei168.com/uploads/upimg/20240806/12862020_0_1.gif">实测值/FEV<img border="0" alt="" src="https://tuku.weimei168.com/uploads/upimg/20240806/12862020_0_2.gif">预计值)