A liquid crystal display includes a first TFT for controlling a supply of a display signal to a pixel electrode, a second TFT connected to the first TFT, and a third TFT connected to a data line. The space within each base beverage container remaining above the base beverage volume provides space in the base container for the correct proportion of at least one mix beverage to be poured into the base beverage container to create a reproducible mixed drink. A fuel production method for producing fuel oil by mixing and reacting enzyme water with petroleum-based hydrocarbon oil is provided, the enzyme water being produced by mixing a natural plant enzyme, containing at least lipase, in water. A first and second handle are associated with the first and second lateral sides, respectively. An index member having a higher degradation tendency than the structural members belonging to the group is installed at at least a part of at least one of structural member to generate an inspection plan through actual inspection of the index member to provide reduction in the number of structural members to be inspected and an extended inspection interval without decrease in reliability.