?? ?????? ????556????????
????:1????????:??????
2????????????
3???????
4???????vx
5???????
????????????????????6???????????14?????? (?? ???)??????????(???????)?????(???“?????????????????”)14???????
????????????????????????5???,???80%;???????2637??572??;????????556?,???????
??????????????“????????????????”?????????????64?,28???????????,???????????????,?????????????????????????“?????????”???????????????????????????????
????,??????????????????????????????????????????????????????????????????????????10??????????????????????????
???????????????????????????????????????????,?????????????,42??????????,??16?????????????????????(????) ???:??????