?? ??????30????? ??????????
![](https://image.chezhanri.com/2019/0517/20190517111647425.jpg)
????:1???????????:??????????
2???????
3???????
4?????98???
5???????
???6??30??????????????????15?????????????????????????????24?????????,?????????,?????????????????2??????????????30????????????????????????,??????????????????????
???????? ??:????????????,??????,???????,??????????,????????????????,?,????13????,????????????
??????,????????,????????????????????????????24????,?????????,?????????
?????????????? ???????????????????:????????,?????????,????????????,??????,??????????????
????????????????“S”?????????????????,???????????,?????????,?????????????????,??????????????,??????????“S”????????
??2????,??????????,????????????????????????????????????????????
????????? ??????:??????????????,?????????91?????????????????30????,????????
??????????,???????????????????,?????????????????3?????????????30????
?,??????“??????????????”???????,?????????????????,???
??,???,????6.8???????????
???????????????,????????????39????????????????2%??????????????????,??,???????????????????????????????
???????? ?????????????????:?????24??????,?????18????????????????,???????????????????,??,??????,?????????????,???????????5??,?????????,???????2???
?????????????,?????????11????????????????,????????????????????,?,??100???????,???????????????100??????????
?????,???????????,?????????????????????????
????????????????:??????????