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

2????????

3?????????

4??????

5??????????

?11????????23????????????(???? ????)???30?????????23???????“?”,??????????,20????“???”???“??”??

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

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

??20?90?????,?????????????????????????????????????????????

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

??? ???? ????????

?,????????????20???????????“??????????????”,????????????“????????????????”?????????,???????????,???????????????

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

??????????,?????????????????POS???????????????,??,????????

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

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