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

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

?,???,??

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