12????27??????????????????22?,???????

???????“???????????????????”?,??????????????????4????????,??

???????????????????????4.3?????,???40km/h,????60km/h?

??????????????,????????????,??????????????,??,?1.8?????;???????????,??????????????,??????????????????,??????,???2.7???

????,?,???,??????????(?? ??????????????)

???????????????:??????

??“????????”????

?? ???????????!???????

????:1?????????:????????

2????????????

3????????

4???????

5?????????????????

12????27??????????????????22?,???????

???????“???????????????????”?,??????????????????4????????,??

???????????????????????4.3?????,???40km/h,????60km/h?

??????????????,????????????,??????????????,??,?1.8?????;???????????,??????????????,??????????????????,??????,???2.7???

????,?,???,??????????(?? ??????????????)

???????????????:??????