????:1???????????:??????500?4???

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

3???????

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

5??????150?

??(??):??????????,???????5??27??,??????(6???????18???????),?????????????????“???????”???????????,???????????

???????1/5?,???,????????3.3??????????????????????,??“??????????”????????60?,??????????????????????9???????,??????????20????????????????????25?????,????98%?

????????????,???????????“?”??????,??????????????????,??15????????,?10??????,????????????

???????,???????????,???????????????????????????,????,????300??????730???,?????????????????????,??????????????14??,????????2.14????,?????????????????????6500???????????????,?????

??????????,????????????????,??????????,??? ?????????????:???????????????