?? ???????7.6????????
![](http://n.sinaimg.cn/news/1_img/upload/2b0c102b/99/w540h359/20181207/U4xA-hphsupy3155504.jpg)
????:1?????????:??????????
2???????????
3????????100????
4?600???3?????
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??????????????(????) ????:???????