Ключевые слова: boiler, builder, business, central, chief, clipboard, control, development, employee, engineer, engineering, examining, heat, heater, heating, helmet, industrial, inspector, insulation, interior, issue, male, man, pipeline, pipes, planning, pressure, project, screw, screwing, seals, spanner, steam, supply, system, technology, tighten, toughness, woman, wrench,