?? ??????????4.7??????? ???
????:1?????:??????????
2????????
3???gm????
4???????
5?????????
?11?22????? (?? ??)?11?22???20?40??4.7?,??????????????
???????????????,11??22?20????????????40?????(?23.21?,???120.23???)???4.7???????????,?15???????
???,???????????????,????????????????
?,????????????????,????????????,???
??,??????200??5????4??????????321??????????????,??????2024???4??????3???????????7.3??????????,???168?????(???????) ?????:???