?? ???4.7???? ???????15??
????:1???????:????
2????????
3???????
4???????1000
5??????????????
???11??22?? ????:11?22??????????20??????????????40???????(?23.21?,?120.23?)??4.7??,?15????
?? ???:??????11??22?? ????:11?22??????????20??????????????40???????(?23.21?,?120.23?)??4.7??,?15????
?? ???:???????:1???????:????
2????????
3???????
4???????1000
5??????????????
???11??22?? ????:11?22??????????20??????????????40???????(?23.21?,?120.23?)??4.7??,?15????
?? ???:???