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

2????????

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

4?????

5???????

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

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

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

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

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

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

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