???????,??????????????????????4000?,????????????400???

?????????,?,????????????????,????????????

?????????????? ??????????:????????????12??????????2.5??????,???????170??????????????,??????????????????????�??�,?????????????????,?????,????

???????? ???????:????????,?????,????????170?,????????????????,???????????,?????????,???600?????????????,????????

??,?????????????????????????,??,?????????????????(????)

????????:????????????? ??�???????????�????

?? ????4000? ??????�?????�??

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

2???????????

3???????????

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

5????????????

???????,??????????????????????4000?,????????????400???

?????????,?,????????????????,????????????

?????????????? ??????????:????????????12??????????2.5??????,???????170??????????????,??????????????????????�??�,?????????????????,?????,????

???????? ???????:????????,?????,????????170?,????????????????,???????????,?????????,???600?????????????,????????

??,?????????????????????????,??,?????????????????(????)

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