???????6???????

???2????19???????? (?? ?????????)?????????????????????(????????????????19??)????????19???????????????,????6???????

6??:?????“??”????“??????????????????????????????”????????????????????“??????????+?????”??????????????????????????????“??????????????????”???????????“?????????????”???

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

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

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

????????????????????“?????+??”??,???“??????+??+X”?????????????,??????????“?????”?????????,???

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

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

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