????? ????? ??????? ?????? ????? ????? ?????? ??????? ?????????? ??? ????? ?????? ??? ?????? ???????? ????? ??????? ???????? ????? ??????? ?????? ????????? ?? ?????. ???? ??? ??? ?????? ?????? ??? ???? ???????? ????? ?????? ????????? ????? ??????????? ?????? ???????? ??????? ? Back Extension? ?????? ??? ????? ??????? ?????? ?????? ?????? ???? ????? ?????? ??????? ?? ???????? ?? ?????? ????? ?? ???? ?? ???? ???????? ?????????.
????? ????? ??????? ?????? ????? ????? ?????? ??????? ?????????? ??? ????? ?????? ??? ?????? ???????? ????? ??????? ???????? ????? ??????? ?????? ?????????????? ?????? ??????? ?????? ??????????? ?????? ????? ??? ?????? ??????? ??????? ??????????? ??? 13 ????? ?? ????? ?????? ????????? ???? ???????? ???????? ?? ???? ?????? ????? ?? ???????? ??? ?????? ???????? ?? ????? ????????. ??? ?????? ?????? ????? ?? ?????? ?? ??????? ??? ??????? ???????? ????????? ???????? ??????? ???????? ?????????? ?????? ????????? ??? ??? ???. ???? ???? ??????? ?????? ????? ?????? ????.

????

E7031A- ??????? ?????? ???????? ???? ????? ?????? ?????? ?? ????? ????? ????? ???????? ??? ???? ??????? ??????? ???? ?????? ?????. ??? ????? ?????????? ?????? ??????? ??? ????? ?????? ???????? ????? ?????? ??????? ?????? ??????? ???????? ??? ???? ????????? ????????.

?

????? ??????
● ???? ?? ??????? ???????? ???? ?????? ????????? ??? ???? ??????? ???????? ???? ??????? ???? ???? ??????? ??? ?? ????? ????? ????????.

???? ??? ?????
● ????? ???????? ??????? ??????/????? ???????? ?????? ?? ??? ???? ??????? ???? ????? ???????? ??? ??????? ???????.

????? ????????
● ?? ????? ???? ?????? ????? ?????? ??????? ???? ???? ???? ?????? ???????? ??? ???? ??? ?????? ?? ????? ?????? ??????? ???????? ?? ??????? ????????.

?

????????? ??????? ???????? ???? ??? ?? ?????? ???????????? ????? ??????????? ?????? ?????????????? ??????? ???????? ?????? ????? ??????? ???? ????? ????? ???????? ??? ??????. ???? ????? ????????? ??? ????????? ?????? ?????? ?????????? ???? ???? ????? ??????? ?????? ????????? ???? ????? ?????? ??????? ???????? ????? DHZ ???? ????. ????? ????????? ???????? ??????? ????? ?????? ????? ????????? ????????? ??? ????? ?????? ??? ?????? ?????? ????? ??????? ???? ????????? ????? ????? ?????? ????????? ?? ?????? ???? ??? ??? ?????? ?????? ??? ???? ???????? ????? ?????? ????????? ????? ??????????? ?????? ???????? ???????? ????? ?????? ?????? ??? ????? ??????? ?????? ?????? ?????? ???? ?? ????? ?????? ? ?????? ?? ???????? ?? ?????? ????? ?? ???? ?? ???? ???????? ?????????.
????? ?????? ??????? ?????? ??????????? ?????? ????? ??? ?????? ??????? ??????? ??????????? ??? 13 ????? ?? ????? ?????? ????????? ???? ???????? ???????? ?? ???? ?????? ????? ?? ???????? ??? ?????? ???????? ?? ????? ????????. ??? ?????? ?????? ????? ?? ?????? ?? ??????? ??? ??????? ???????? ????????? ???????? ??????? ???????? ?????????? ?????? ????????? ??? ??? ???. ???? ???? ??????? ?????? ????? ?????? ????.