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

2???????

3??????????

4????????

5???????

6?????26??????????????????????????????,???????????????

???????190.65?,??8.75??????????,????????????????????600??????????????????,??,?????????P2??????????????????????,???????????????????????????????????????,??????????,???1400??????,?????

?,????“2+3+N”?????,????????????(?????????????? ???????????? ?)

????:?????