??8????4???? (??????? ??????????????????)???4???,???,?4×100???,??????????????????????????????????????????,??,????,???????????????,???????100????????????????45?92,?????46???40??

??? ?????? ??????????:??? “?????????”_????

?? ??????

????:1??????????:????600?????

2???????200??500

3???????

4?????

5????????

??8????4???? (??????? ??????????????????)???4???,???,?4×100???,??????????????????????????????????????????,??,????,???????????????,???????100????????????????45?92,?????46???40??

??? ?????? ??????????:???