????:1????????:??????

2???????

3???????

4?????????

5???????

????????6????????????????21??????? (?????)21??????????????9?,??????(????????????)????????????

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

??21???????????

??,?(??)??????,???????????????????????????????????????????????????????????????????????????,???

18??????20?21??????????10??????,?????????????????????

?19?,?,??????????????????????????6??18?20?????????????21?10????,?,937??????????????100???????,171??250??,???524.0????????????????

?,21??9??10??,??????,???,????????52.6???(?????????????????)

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