35. 史的病童,出現下列現象為嚴重發作(severe exacerbation)的指標,何者為非?(A)胸部擴張不良(poor chest expansion)(B)低血壓(hypotension)(C)唇色發紫(cyanosis)(D)最大吐氣流量(peak expiratory flow, PEF)=80%