?? ?????????????????
![](https://image.chezhanri.com/2019/0508/20190508163448607.jpg)
????:1??????:??????
2??????????
3???????100?????
4???????
5??????
???????????????(???)???????????????????????,?????????????????????????????????????-??????????????,??1000???,??????????????,???????????????????????????
?????????????,??,??1Kb?????????????????????,??10?????????,???????????«?????????»???????????«??????»?
???????????,?????,????????????,??????????,???????????????????????,???????????????????1Kb??????????????,?????????????98%,??????????89.5%??????????????????????????
?????????????????,??????????,??,?????8?????,???????????????,?????????????(????????????15??????????????????)???????,???20???????????????????????10????????????????????????????????????????????? ??????????????????????:???????????????????????