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

2?300??????

3??????????

4?????600??

5????????

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

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

?? ??:“???”?????????“?????”??,??

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

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

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