A.CNG和LNG B.CNG C.LNG D.LPG
A.低負(fù)荷及怠速 B.高負(fù)荷 C.高速 D.怠速工況
A.(LPG和汽油) B.(LPG和柴油) C.(LPG和壓縮天然氣) D.(LPG和液化天然氣)