?? ???????? ???17?????
????:1??????????:????
2??????????
3??????????
4?????vx
5???????????
?????2???????8?????????? (?? ??????????)???8????,?,???????17???
?,?2?????????3??????2??????14?????
????,?2???7????,???????????????????????????????????????62???????????????7???,???????????????????????????????4?1500??500??
8????,??,??17???(??) ??:???