?????2??????7??? ??7?,???????????????2????????????????35?3.1???????????????37.14?,??127.76??????????????,????9???

?????,?(P????)???4.2??,?????????3.1??

????,?,??????,??44??????????????????,??????,??

????????????,???,???2????????????????54??,???23?????3??????,?? ??:??????????? ??“????500”????

?? ?????????3.1???:????????,????

????:1?????500:?????

2???92?

3??????

4???3??400??????

5???????

?????2??????7??? ??7?,???????????????2????????????????35?3.1???????????????37.14?,??127.76??????????????,????9???

?????,?(P????)???4.2??,?????????3.1??

????,?,??????,??44??????????????????,??????,??

????????????,???,???2????????????????54??,???23?????3??????,?? ??:???????????