??
??????2?????????????12???? (??? ??????????)2???????????12?????,??????????38????????????40??????
??,???1988??,38??????,????21?,??????????????????????????????????320???????????????????????,????????????,???????1.63?????,??????????????????????????
?,?????????250?????????
??,??????????????,????????????????????400??????????????,????????????????,????
?????,?,??(???????????????) ????????:?????
?????????
????????????????????????????????????????