????:1????????:????v

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

3???????????

4?????????????

5????????

??????????10????????12?????????????????????????????????? (?? ?????????????????)“?????,???????????????????????,??????”?????????????????????????????????????

?????????????????????? ? ????

????????????,??,?????????????????,??“???”,??????,???????????????????

???,?????0.51????????????????????,???????????????????????????????????

“????????????????????????,??,??,????”????????????

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

?????????????,?????????,???????????????????????????????,????????“??+???????????”????????????????,???????????

“??????,???????????????????????????????,?????????”???????

?????????????????,??????????????,??????513????????????“????”??????,??????,???????????????(????????????????)?????????,?????????,???,??,?????????????“???????????+?”????????????????????,??????“?????”,????????????????????,?????,?????????????,?????????,????8????,500???

“???????????,???”???????????????????(??)

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