?? ????????7.6???????
![](http://n.sinaimg.cn/news/transform/200/w600h400/20190424/KY-2-hvvuiyn8022691.jpg)
????:1??????????:94?95?92?????
2????????
3????????
4????????
5???????
????????????2?9???????? (? ??????)????9?,???????2?9?????????????????????7????23?,?????7.6?????????????????,????????????
??????????,?????????????????????????????,????????????????????,????20???
???????,?????????????10??????????0????????????????(???),?30????????
???,?7??????????30?,?,?,?,??????????9????30???????(PTWC)??????
????????????????,??????????????100????500??,??3??7.0???,???2020???????????????1????????????????????????????????27????5???2??????????????????7.7???????????????????,?5????????,?????2018????????????7.5?,????4.0??(????????????) ???????????:??????????