The service menu presentation system acquires the operation data of the power generation plant, determines which operation pattern represents the operation from among a plurality of operation patterns predetermined in accordance with the output form, and the operation data acquired in a certain period The operation time for each driving pattern in the period is calculated based on the service pattern, and the driving pattern within a certain period is determined based on the ratio of the driving time in the predetermined period, and the service according to the driving pattern in the determined period is determined. Display the menu.
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