With the development of production and science,radio a wide use in　　a short time.

A．found

B．finds

C．have found

D．has found

慢性支气管炎的肺功能检查为

A．第1秒用力呼气容积(FEV/用力肺活量降低

B．肺活量(V减少

C．肺总量(TL增加

D．功能残气量(FR和残气容积(R增加

E．一氧化碳弥散量(DLC降低