?? ?????????????:???,???????????
????:1?????sn:????
2???????
3?????????????
4??????????
5???????
???????11??25??(????????????? ??????????????????)??25?????30??
??:?????????????????,?,????????????????(?????)
???????????:????????????????11??25??(????????????? ??????????????????)??25?????30??
??:?????????????????,?,????????????????(?????)
???????????:?????????????:1?????sn:????
2???????
3?????????????
4??????????
5???????
???????11??25??(????????????? ??????????????????)??25?????30??
??:?????????????????,?,????????????????(?????)
???????????:?????????