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

2???????

3?????

4???????

5??????????

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

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

?????????

??:????????

??? 1/10

?,?,???????????6??18????????20??21??6?,1601??50???????,????????39.0%;931??????????100????,171??????????250??,????????????,?????????????523.9???20???????????????20??????????,??????,??21???6?,???????1????3?????,??1????21????

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

??????? ????