?? ???:???????3.41????????????
![](https://image.chezhanri.com/2019/0614/20190614151753267.jpg)
????:1?????????:?????????
2???????????
3???????
4????????
5??????????
??8?????????19????????????????????????????? 19?,??“??”?????????,????????????1-7??,????,???3.41?????????,?????62.34%,??1817.6?????????(???????????????????????)??,?52.09%?
?,???,?????????,??????????“??”????“?”,???????????????????(????)
????:????