?? ??????????????? ???????
????:1??????????:??????
2?????sn
3???????????
4???????
5?????
?????????11?????26????(?????? ???)11????26????,?????????????????,??????????«????»(????????????????«??????»),??15???
????? ??????????????????,????????????«?????»,????????????,«???????»?????????????,????????????????????????????????????????????????????????????????????????????????????
????????????????????,?????????,????????????????????????30????,?????20%?,??300???????????;?????????????????????????1000?????
??,???????????1000????????????????,?5%?????,??500??;?????,???????6%????????????,?300????;????5?,???????????????300?????????????????????
????,??????,?????????????????????????????50%????????????????????,?????50?????????
??????????????,???,?????
????????,“?????????????”?«??»?????,????,????10??,??????????????????
?????????????????????????,????,????“3+N”??????????????????????????????????????????????“?????????????”???????,?????????????????,??????(???????)
?????:???????????????