??????11???????????????????????????25??????????????? (?? ???????????)??????????50??,“??50??”24????1500???????????

???????????????????????????????????????????????????????

???????????????? ?????????????? ?????? ???? ???????1500????????? ?? ?? ??????????????????? ?? ????????????? ?? ????????

?,???????????????????????,??????????????????????????,?????????????????????????????(??)

??:????????? “??????????”????

?? “???50??”??????

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

2??????v

3???????????

4???????100????

5????????????

??????11???????????????????????????25??????????????? (?? ???????????)??????????50??,“??50??”24????1500???????????

???????????????????????????????????????????????????????

???????????????? ?????????????? ?????? ???? ???????1500????????? ?? ?? ??????????????????? ?? ????????????? ?? ????????

?,???????????????????????,??????????????????????????,?????????????????????????????(??)

??:?????????