A.細(xì)菌總數(shù)≤500cfu/m3 B.細(xì)菌總數(shù)<200cfu/m3 C.細(xì)菌總數(shù)≤15cfu/cm2 D.細(xì)菌總數(shù)≤10cfu/cm2 E.細(xì)菌總數(shù)≤5cfu/cm2
A.誘發(fā)呼吸道疾病的危險(xiǎn)因素 B.戒煙 C.呼吸功能鍛煉 D.合理營(yíng)養(yǎng) E.合理休息