????:1??????vx:???????

2?????????

3????????

4??????????

5??????????

?????10??21??????? (??????????????)??21???,?18????????49????????????????66???????????????????????????????????,???????????????83????,??1304???????,??4545???

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

????,????????????????????????????????????????????????43?,????????????23???????;????????,??????????????????28?,??????????30??,?????????8????

?????,??1?10????,?43?????????????,?????????12??

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