A method and associated apparatus includes depositing metal on a plating surface of an object immersed in an electrolyte solution prior to bulk deposition on the plating surface. To operate the gas turbine with low emissions, for a constant power output, the exhaust-gas temperature increase generated at the outlet of the gas turbine as a result of the combustion temperature increase is at least partially compensated through the addition of a liquid or vaporous medium. Thus, the gate electrode is prevented from electrical connection with a sourcedrain layer resulting from formation of silicide films on surfaces thereof, and its resistance value is prevented from being increased by the silicide films hardly causing phase transition following refinement. Instead of being made of platinum or platinumiridium, the lead wire comprises a core of a non-noble metal supporting a functionally graded coating. The determination is made as to which of a plurality of suppliers are to be provided with the request for quotation and attachments.