?? ??????????????????????
????:1????????:?????
2????????
3?????????
4????????
5?????????200?
?????????????2??12????? (? ??????????????)2???????12???????,?????38???40???????????????
??????????,??????1988?????????????????,38???,??21??????????,????????320????????????????,?????,????????????????????1.63????????,???????
????????????????????,???????????250??????
????????????,?????,????400?????????????????????????,??????????????????,????????????
???,?,?????(?) ???????????:????????????