TY JOUR TI THE USE OF BASIC CHASSIS FOR THE CREATION OF FIRE TRUCKS AT THE PRESENT STAGE KW fire truck KW basic chassis KW serial chassis KW special chassis KW analysis KW exploitation KW standard JO Problems of risk management in the technosphere AU Presnov, A.I. AU Marchenko, M.A. AU Shidlovsky, A.L. PY 2025 IS 2025 PB Saint-Petersburg University of State Fire Service of Emercom of Russia