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

2???????

3????????500???

4?????150???

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

??6??15???? ?,?6??15????????????18?????:????,6????15??????????????20????16??20?,????????????????????????????????????????????????,?????,????????????????????????????????????????(100~200??)??????????????(??30~50????????????????????,??70??),??????????????????

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?:

1???;

2????,?????????????????;

3???????,??????????????????,??;

4???????????????????????????,????????????

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