????:1???????:??????????50

2?????

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

4????????????

5??????????

?????:??????12?????,???????????????(12??????1?)???????????,????,????????????????

“????”????????????

????????????????????????«?????????????????????????????????????????????»12????????????1???????,«??????????????»?????????????????????????????????????,????????????;??“???”???????????????

??????????????????? ?????

12????1??,???«????????»?????????????????????«?»???????????????????????????????????????????,????“?”“?”??????????????????:?????????????????;?;??????????????????,????

????????

?12?????1??,«????????????»?????,????????????0.5???????,?????????????????,?????1.5%,?1%,???????0.5%(??????????)?

????

???????????????????????«???????????????»,????12????1?????,?,??????????20%?????????????

???:?????????