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

2?????????200??500

3???????????

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

5???????

?2?????????????5??(?? ??)2?????5??,???60?????????????????????????,???,??????

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

?????,????????????,??????????????????????????????????????,????????????,??????????

?????,???????1000??,??10.3??,?????????12??????????????????,?????????????,??????,?????????????????????????????,?????????

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

???,????40????????20?,????????????????60??(??)

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