?9?20????????(?? ???????????)???14??????????????“??”(???)??????19??????,??????“?????????????”??20????????????????????????8??????????????,????????

20???????,?,2????,2????,???????942?????,????

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

??,20?,????????????????????????????????

?????,???20???8?????????,?,??????????????????;????,?????????????80????????/???????20????9?????????3?????????

?????,20???14???21???????????????14???????,???????????????????????????????,?,?????????????(?????????????????) ????????:???????? ??“??????”????

?? ??“??????????”???

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

2?????vx

3?????????

4???????

5???????

?9?20????????(?? ???????????)???14??????????????“??”(???)??????19??????,??????“?????????????”??20????????????????????????8??????????????,????????

20???????,?,2????,2????,???????942?????,????

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

??,20?,????????????????????????????????

?????,???20???8?????????,?,??????????????????;????,?????????????80????????/???????20????9?????????3?????????

?????,20???14???21???????????????14???????,???????????????????????????????,?,?????????????(?????????????????) ????????:????????