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

2??????????

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

4??????????

5?????

???????????2??10?????? (?????????????)?????????????????????????10????

?10??,??,?????????????????????????????,???12?15???????????????????????????????????

???????????????,?????????????????????,????3??????????????????5?????,??15%????????20%?

??????????,?,??????????????,????????????????1.8?????????????,??50????????????,??????????120?????????????,???

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