?? ????????????
![](http://n.sinaimg.cn/news/transform/200/w600h400/20180713/gq3T-fzrwiaz8715784.jpg)
????:1?????????????:????
2??????????
3?????????
4???????
5???????????
2?14?????????????,????????????? ??? ??????????
2?14?,????? ????? ?
2?14??????????????????,????? ????? ?
2?????14?,??????? ? ?????
2?14???,??????????????????? ? ??
????:??