A.70%~80% B.95%~99% C.90%~94% D.0(大氣壓)
A.80%~90% B.90%~94% C.93%~97% D.為0(大氣壓)
A.流量脈動小 B.容積效率高 C.吸入性能好 D.困油現(xiàn)象輕