?? ???????????????:??
????:1?????????:???????
2??????????
3??????
4???????
5??????????
????12??4? ????,???????12?????????????4????????????,?????,????????,?????????????????????????????
???:?????????????????,????????,????12???
???,??????????,????????????
??,???12???????3??????????????????,????,???????“????????”????4?4?27?,????,????
??:?????????