????:1??????????:????600?????

2?????????

3?????????

4?????

5??????????

?????1??????3????????????????? (???????????????????? ???? ????????????)???????????3??????????????

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

???????????????????????15????????,?????????????

??????10??????,??10??“????????????????????”???????,???,??????“??????????????????”????

???,????????6.2?,????????????????,???????550????,?????????????????????

????,?????????,?????????????????????????????,??????????170???????????,???

?????,??,????????????????????????,???????????????????160?????????,???5??????????????????,???????6????????,????10?????????,????????????????20%?(????) ???:???