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

2??????????

3????????????

4????????????

5??????????

??????12?????????19???????????? (?? ???)???????????,???????“?”?????????????19????100?,???????5.4??,??????20????3?,????????

12???????19???,?“???”???(???)

12??18?,????“??”??????23????????,??,????“?????????????????????????”?????,???

??,??????????????????????????????????????????????????,????????????????????????????????????????????????????????????,??“??????????????”??????????,??

????12?19?,?4.3????????????,??????2.5%,????4.5??,??

??,?12????19??????,????????????8.5???????,?19.2%;???403.8?,?22.6%,?????(?)

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