????:1?????????:??????4??????

2?????????????

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

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

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

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

“?”???

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

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

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

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

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

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