@????? ???????

??

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

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

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

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

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

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

 

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

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

????:??????

?????????

?????@????? ????????????

????????