???λ????????? > ?????? > ???? > ??????????????????????????

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

??????????????δ????????2011-06-10 09:38:32

 

???????????????????????????????????????????????????????????????????????????????????????????????????????£?
???·?????????????????50+570+480(360)+100=1100?????????????250+360=610??1?????????20??5??????50??????????????????????610*7-1100*7?????4270-7700??????????85.4-154??????60????????????15000?????4000???????????????3.5??-1.9??????????????46.8??-25.9???
1?? ???????
??“?????”?????????????????????????????????????????????;???????????20????????????50?????(?????????????????????????????????????????????????)
2?? ????????
??????“???????”.??????2????????1-2????3-4????5-6????7-8????9-10?????????10???5?Σ?20???4?Σ?40???3?Σ?80???2?Σ?160???1?Ρ????570???????????o???????????????????3??????250??
???????:??????????????????40407?????????????40407???????????α? ????
88 0 ?????????????????????????
????????????????????????????????????????40407???????40407????????

??????

??????
????????????
???????
??????2D
?????51wan

??????

????????