?? ??????2.1???
????:1??????20?????:????????400?
2???????92?
3???????
4???????????
5???????????????
?12?????13??????? (? ???)?12???????13??2.1??????
?,12????????????13??????????????13??25??31?????????,????????(??22.11???????????,??113.32??????????)?2.1?????????????,???13?????
??,???????????,???????????????
?,?11??????????????,??,??,???
??????????,?5??,?????????5???????(?) ??:????