?? ??? ????????????1:2?????
![](http://n.sinaimg.cn/news/1_img/vcg/8de453bf/77/w1024h653/20190126/iuU1-hsccyrt0148784.jpg)
????:1?????????:??????
2??????????
3??????????
4????????
5?????????
????2????????10?????????? (????)?????10???A?????,?,????,??1:2??????????
![](http://i2.chinanews.com.cn/simg/cmshd/2025/02/10/16850e8ba79c4b8d83b9c844361acfc0.jpg)
????,?7????????4,??????1/4????????????,?????????9?????????3,?????1/4??????
??????:????