So that it is necessary to shorten excessive time of gasoline /CNG Bi-fuel vehicle, speed up construction of CNG gas station and change Bi-fuel vehicle into Mono-fuel CNG vehicle.

• 因此应尽可能缩短汽油／CNG两用燃料汽车的过渡时间，加快CNG加气站的建设，将两用燃料汽车改为纯CNG汽车。