?? ? ???2??????????? 7???
????:1????????:??????
2?????????
3???????????
4??????????
5??????
???????????12?27?????????????? ??????:?????????????12??27?5??,????,???2???,7???
???,????,?????????????,????,????????????????,???,?????????,?????????27??????10?,???????,??????
????????,2???????2???????7??
????5?????????????,??800???????????????38??,???78??????(?????????????????) ??:????