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

??

???1???18???(??? ?????)1?18???,????????2.7??3.2????????:??2.7???????3.2?????????1?2???????????4.8???????????????????????????4.6???????,?,?,?????????

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

?????,??2.7???????????????????????????????????????;????3.2????????????????????????????????????????????????(???)???,?????????????(???????????) ????????????????:????

?????????

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

????????