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

???????:???