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

2????????

3??????????

4??????????

5????????????

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

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

???,?????????????????????????????,??,????????????????????????????,??????????????????????????,?????????60???????????????,???

???????????,??????????;???????????,????;?????????????????,????90%?

?????????,“???”??????????????,???????,60???????????34%,????????????????????????????????????

????????,?????????????????,????,??????????6???,?????????????50%??,???“??????”????????,?????

?????????,2????????????5????????,??????????????????????24%? ???????????????????:?????????