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

2?????

3???????

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

5???????498

6???????????30?????,??????????200????????????????????????????

?????42????21??,?????185??????????,???110??????????????????????????????100?????????????????????,??????100%?????????????????????,?????????????????????

??????? ????????????????:??????,??????????20???,???????85%????????????,?????????????????????60????????????????1500??????????????????????????,???

??????,?300????????????,???????????10???????????,????????????????????,???1.2???,??????????????????????1.3???????????,???????????????

???????????????? ????????:?????????????,??,?????????????,?????????,???????????????,?????????????,?????????????

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