????:1???????:????

2???????

3??????

4?????

5???????

?(??????????????):????????,???????,??????????????????????????,????,????????????????????

?????????????????,???????????,??????60%???????????,???????????????,??????????

?????????????????,????????1800????????????6?6????????????????,??????????6??????????????

????????,????????,????????????????,???????800????

??????????????????????,????????,?????,?21???

6????15??,?????,?????,???????????????????????,????????????,?????????74?????????????85%??????????

??(6??????16?????????)?????,???????????????417???????,??????????????13???????,??,??????????? ??????????????:???????????