Ключевые слова: adorable, backgroundpictures, cartoon, character, colorful, decoration, employee, example, explanation, expression, figure, helmet, hold, hydraulic, icon symbols, illustration, isolated, items, joint, look, maniac, map, mascot, metal, object, person, pipe, pipeline system, pipes, plans, planto, please note, read, reflection, registration, river, rivet, scene design, scenery, screw, see, sewage, sewage system, structure, study, style design, tangle, traditional, valve, vector ethnic, worker,