Słowa kluczowe: e-learning, rapid authoring tools, moodle, high-pressure closures, wave-ring gasket, stress-strain analysis, sintered austenitic stainless steel, molybdenum addition, pitting corrosion, potentiodynamic polarization, linear systems, time-varying systems, education, fluid power systems, CETOP, aviation training, aircraft engineering, polytechnic education, academic education, sustainability, biobased materials, multi-criteria methods, analytical hierarchical process (AHP), postgraduate education, hydraulic drives, pneumatic drives, vibroacoustics of machines, Moodle platform, blended learning, study visits, evaluation, polyurethane materials, measurements mechanical and acoustical properties, engineering studies, commissioned courses, power engineering, assembly platforms