?? ??????????????? 5???????????
????:1???????????:??????
2???150
3?????
4?????????
5???????150??
?????6??18?(?? ??)????????????????18?,??????????,?????????????????????????????????,???5???????,?,?????????4?????????????????,?????????????????????1???????????
??4????????????????????????12?????,???,??,??
?????????,???????????????????4????,???????,?,?????????????????????????
???,???????,???????????????????????????????????,5??????
???????????????????????,??,??,??,??????????????????????4???
?????????????,?????????????????????????????????????????????????????,????????????????????(?) ???????????:?????