????????1.7??????????? ???2.6??

????:?????????????:?????????

??,????1.7?,???????????6.3?????1??????????????????10????????,????????????????????????????????????????2.6??????????

?????????????,???????,??????????“???”,??????????????,??????????,??“????????????????????”????“????”?

?? ??????:“???”??????????????“????”?????????,???????????

??,??“??”??,????????????????????????????1000??????????????????????????????????????????????,??,??“??????????”?????????????,??????????

??????,????????????????,??“????????”????????????????“???”????????????????????,????

??? ??:??????????????28.6???????,??700?,??????????????????8500??,?12?????(?) ???:?????