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

2???????

3???????

4??????400?????

5???????

?????????????????2?8?????????????? (??????????????????? ??????)????????????8?????????,?????2????,??????????????????????????????????????????780??????????????????

? ???????????? ???????????

???,???????????????????????,??,????,????13????????30?????????,????,15?????????30??????????????,????????????????

?????????????,?,???2?17????,????????????????????????????????????????????????????????

?8??18?,????????10????30?????????,?200?????(?)

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