??????????????????2????????7???????????????????????? ??:???,?????????????????,????????????6??????

?,???6???,????1???????????????26????,????????????????????????????6000?????????,5????,??????5.2???,??????????????6?,?????????7??????????4.0???

?,??????????????????????????????,??????????????????????????????????????????6?????,???3???????3???

?,?????????????????????20000?,?????340???,???????11000?????????????,????

????,??????,?????,???????????6?????????????(??????) ???????????:?????????????

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