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

2?????????

3????????

4?????

5????????

2?????????10?????????,?????,??????(????)????????????????,8????????????????,?,??????????,?????????

????,???,?????????3?????????????????????,???700??????????????????????????????????????,?????????98.2%?

???(?????????????????)????????8????????????,????????70??????????52?????,?????????????????????20????

?,???2????20???1??15??????,???????????????????????????????500???,????(???? ?)

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