?? ?????????????4?????
????:1?????????:??????????
2???????
3???????
4???????
5??????150???
?????????????????????2??4???????? (? ?)?4?,1??28???????????????2???????????????????3????????,???4??????,??????,??????????????????????????????
???,????????,????1??28???????(?)??????????????????2?3??????(?????????????????????????),????5000??,???1.5?????,?????????????????????????????????????????????????????
??,???????????????,???,?????????????????1?????????????2????????????,?????20????,????;????????1500??,?????????????????????????????????????????????????????????????
?,????????,???,?,???????????????????????????????????????????????????????????????????????,?????????????,??????(??????????????????????) ???????????:????????