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

??

?1??31?? (????? ??????????????)???????????1??????????30?????,?????,????,??

??????1????????????????30????????17????????????,1?30????20?31???????7??,??????,??,????????1?2?????????????????0.6?,??????????:???????3.6???????????3.1??????????2.7??

??,?,?????1?31?11?28?,?????????????,????????,????????????????;????(??????)????????;??(????)??????????????????;?????????

??1???31????????????????????????????????????,???????????????????

????,1?????????31??,????????,???,???????????????????????,??????????????????????????????3?????4????????????????,?????5??6?????:?4????6?;????????1??????3??(?????) ?????????:?????

?????????

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

????????