????????? ?????????? ??? ?????????? ????-???? ????????? ????????? ??????????? ??? ???? ??????, ??? ????? ?? ?????????? ????????? ???? ??????.??? ???? ???????? ?????? ????????? ????????? ?????? ???????????? ? ??????????? ?? ???? ?????? ? ???????????? ????????.A bulldozer can be a track-sort tractor by using a blade connected inside the entrance alon