?? ???2.1??????
????:1????????????:????????
2???????
3??????????
4???????
5?????????
?12??13?????? (????? ?????)????????12??13?2.1??
??,12??13????13?25??31???,???????(???22.11?,??113.32???????)?2.1????????????,??13???????????????
?,?,????????????
?????????,?11??????????,??????????????,???????????,????
??,??5?????????,?????????????5??(??) ???????????:???????????????