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

2?????

3????????

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

5?????

?8?????????????????19????????????(????)?????????«?»???,???????11?????26???30???????????????????????18???,??100?????????????,???????????????500???,???????????

??????????,???????30%???,?500??60%,???,???

????????,???????????60??????????????????,???

?:???,????????????????????????????????,?????????????100???????????

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