??????2???20??????? (? ?????????????????)??????20?????????????,????????“?????????????”????????????

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

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

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

?? ??“?”???? ????:??????????????

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

2?????????

3?????????

4?????vx

5????????????

??????2???20??????? (? ?????????????????)??????20?????????????,????????“?????????????”????????????

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

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

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