A.空濾堵 B.空氣流量計(jì)濾網(wǎng)堵 C.進(jìn)氣歧管漏氣 D.空氣流量計(jì)本身故障
A.1%~2% B.2%~5% C.5%~10% D.6%~15%
A.NOx,HC B.NOx,CO C.HC,CO D.CO,HC