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

2???????????

3??????????

4??????????

5?????vx

??11???????????????????22????? (?? ??????)?????????????22????,9??????????105,??????;??1.2%,?14.4%,??????????

??,????????20???(????)????????????,????????????????????,???????

??,??????????13????????????????,???

??????????????????,19?????????????????????(?)????????????123,?????????????????,????18????????????????????,???????,19??(????)???????2.5%,?????28.7%??????????????????????

“????”???????????????????????????????????????????????????(???) ??:????