?? ???:99.9%??????????????????
![](https://image.chezhanri.com/2019/0509/20190509113658912.jpg)
????:1????????:????98?
2???????????
3???????
4?????600?????
5?????
????9??10? (??????????? ????????????)?????????????????(???)10?,????99.9%??,?????9?????23????????
????????????,?9???????????23?????????“?????????????”????????????,????,????????????????????????????????4?????????????
????????????,?????????,?????99.9%?,????????????????9????????????????????????23?????,????????????0.1%?
???????,??????????????,??,??????,???????????????????????????,??????(??) ????:???????????????????????????