????:1???????:51pc·mc??????

2????????

3???24????????

4???95?

5?????????

????????????????1???7??????????? (?????????????? ?? ????)??7??,????????6.8???????????,?????????????????????????????2.2???????????????????????

?????????,1????7????9???????????????5???????????,?(????????????28.50????,?87.45?????????????????????)??6.8????????????????????,????????????10???????????????????,???

??,???????????????????,??????????????????????????,?????

???1500???

????????????????????????,??????????????,??????????????????????????????????????????2.2?????????,???,???(???????????) ??:????