?? ???4.2???? ??20????????????
????:1???????:??????
2??????????
3?????????
4???200????????
5????????
??1?2??? ??????????,??:01????????????02??12??40?(?????????????43.81????,????81.27?)??????????4.2?,??20??
???:?? ????:????1?2??? ??????????,??:01????????????02??12??40?(?????????????43.81????,????81.27?)??????????4.2?,??20??
???:?? ????:??????:1???????:??????
2??????????
3?????????
4???200????????
5????????
??1?2??? ??????????,??:01????????????02??12??40?(?????????????43.81????,????81.27?)??????????4.2?,??20??
???:?? ????:??