26.在以流量計測量混合型肺部疾病(mixed pulmonary disease)患者之肺功能時,最可能發生下列何種狀況? (A)最大呼氣流速(peak expiratory flow rate, PEFR)接近正常值,但用力肺活量(forced vital capacity, FVC)低於預測值的 80% (B)最大呼氣流速(peak expiratory flow rate, PEFR)低於預測值的 80%,但用力肺活量 (forced vital capacity, FVC)接近正常值 (C)最大呼氣流速(peak expiratory flow rate, PEFR)與用力肺活量(forced vital capacity, FVC)皆低於預測值的80% (D)最大呼氣流速(peak expiratory flow rate, PEFR)與用力肺活量(forced vital capacity, FVC)皆接近正常值