?? ????????????????
????:1????????????:????400??
2????????
3?????????
4???????????
5??????V
?????2??4?? (? ?????)?????????????????4???,???,????????????
2????????1??,???????????????10%????????????????????
4??,???????????????,?,???????????,?????????????????????????,?????????????????????????????,????,???????????????????????????????????,??????????????,?????
????????????,?????????????????????,??,????????????,?????????????(?????????????) ?????????????:???????????