?? ?????????????????????
????:1??????:???????
2????????????
3?????????
4????????
5?????
???1????3??? (?????? ???? ?????????)????????????????????3???
?,???????????????????????????,??????????????????????????,??????“????????”?????????“????”,????????????????
????????????15????????,????????????????????????????????????????
?????10????,????10???“????”?????????,????,?????????????????“?????”???????????????????
????,???????6.2??,???,????????550?????????,?????
??,????,???????????????????????????????????,??????????170??,????????????????????????
???????????,?,???????????????????????????????,????????????????160??,??????5????????????????????,??????6???????????,?????????10????????????,??20%?(????????????????) ????????:????