? ????????? ?? ??????? ????? ????? ???????? ????????? ?????????? ?????????, ???? ?? ?? ?????? ????????? ??????? ? ???????????? ????????????????.??? ???? ???????? ?????? ????????? ????????? ?????? ???????????? ? ??????????? ?? ???? ?????? ? ???????????? ????????.A bulldozer can be a observe-type tractor with a blade connected while in the front and