??????????????????????????????????????????
??   2011-03-07 22:45 ?

 
??????????
????.??
??????
????????
 
??????????????????1????????????????????????2???????????????????????????????
 
??.???????????????????????????????????????????????????????????????????????????????????????????????????????????????????

              ??
        ?1.?2.?3.??4.
         

?10???30??15??30?10??20??20??5????
  ?????30?10??????10?10???15?10????10?10?15???12?10?????15?...

??? 2009-08-11 17:21 ???
?????????????????????
(l)???30005000??10000??????1????30??????????????????????
(2)???????????????????????????
(3)??????500????????????????????????115?????
(4)????I???????????????????????????????????????
??
?????????2/3????
?????????????????
????????????????
?????????
...

?????
1.????? ???????? ??????1015?????????? ??? ?????? ???????? ?????????????
2.??????????? ???????????????????????????
3.??? ???????????????? ????????;?????????????????????
4.??? ???????????????????????????????????????


??????????????????????????????????????1???N??????????k?2?????????????????????3...