????? ??? ????? ?? ??????? ????? ?? ???? ? resulting in wear and tear ? requirement ?? restoration. ?? ????? .taking repair and maintenance ????? ??? ????? ? ?? ?????? ?? lifespan ????? ?? add to. restoration repairs ought to ?? ??? carried out ??? ??????? ? ??????? ????? ??? ???

???? ????/?????? ??/???? ????? ?? ?????? ??? ???? ???/???? ???/??? ??? ????/????/???. ????/????/???? ??? ?????/???/????? ?????/?????/???? ???????/?????/?????? ?????/??????/????? ?????/???? ???/???? ?? ??????? ??/???? ??/????? ???????/?????/?????. ????/????? ??/???? ???? ?????/?????/?????? ??? ?????