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

????:100??3??:??????

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

19??,???????????3.46??(?????????,?)??????????,??????????????????

??,?????????????????????????????????????????????????(??)2.13??????????????,??,??????????????;??????????????????????????(???)0.69????,?,??,???????????????????????,??????????;??????????????????????????0.64????,???,????????

??,??4.43??,??

??????,???????????????????????????????????????4.43???????,?????????????????????????????????????????????????????????????7??,??????????????????,??,??,????(?????????????????) ?????:???