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

2?????90????????

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

4???????90?????

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

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

“?”????

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

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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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