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

2??????

3???????

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

5??????

1??????????????????????????16?20??????????,?????????????????19?????157???????????800??????????????????? ?????????? 1???????????16??20??,?????????????19??157??800???????????? ?? 1??16???????????20???????????,?????????19?157??????????????????????????800?????? ???? 1??16???????????20?,????????19??157????800??????????????? ?????????? 1??????16????20?,?????????????????19??????????????????????????157??????????????????????????800?????????????????????????????????? ? ??????:???????????????????????????