??????????????????????

???????????????2??????12?? (?????? ?????????????????????????)2??12??,???38??40????????

?,??????????1988??????????,38????,???????????21?????????????,????????????????????????????????????320??????????????,??,?????1.63?????,???

??????????,???????250???????

??,??????????????,???400????,??????????????????????,?????

????????????????????,?????????????????,?????????????(?????????????) ??????:??