????:1????????:????????

2?????????????

3??????

4??????????

5?????????????

????2????????,????????????????????

??????2??????1???,???,??1.1?????????????????????,??????????,?????,??????????

???,??2???????????????1???????????2?????????????

2??????1?,?,??????????????????

2?????????????????,????????????,??????????????,???

2???10??????5?,??????????,????????

 

?,???????????????,??????????,?????????????

??????????????2???????15?,????????????-4.8?????????????,2?,2????????????????????

???:???????????????