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1??2???20-30????????????

2??3???48-54????????????

3??4???120-140????????????

4??5???750-850????????????

5??6???1100-1300????????????

6??7???2200-2300????????????

7??8???3000-3100????????????

8??9???5000-5200????????????

????????????????????8???????????20%?????????????????????????8??????????????8??????????ο?

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