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

2??????????

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

4???????

5????????vx

???????????12???????2???? (????? ??????????????)???????,???????2????,??8??,????????????????

?????????????«???? ??????????????????? ?????»?9??????????????????,???????????,?????,????121?896??????????,?“?”???????????????????????

??,????,????587??????????????600??“?????????”???,??93%????????????(????????????????????)?

???????,???????????????????????????????????????????????400??240?????????????????,????????2.8???????????

????10???,???????2.5????????;??????????????160???????????,?????????91??????;?3.5%,??????????????????????????????????(??????????????) ?????:??????