Abstract: Provided are a refreshing method and a display apparatus. The method includes: presenting a video on a display of the display apparatus; detecting whether a content type of the video is switched from a first content type to a second content type; obtaining first picture quality parameter information matching the second content type from preset data of the display apparatus, wherein the preset data includes a predefined relation between a content type and picture quality parameter information, updating the parameter of the at least one picture quality setting option in the picture mode settings menu according to the first picture quality parameter information, and presenting the second section of the video according to the updated parameter of the at least one picture quality setting option in the picture mode settings menu.

Abstract: A hot repair material of refractory materials is provided and includes main materials and binding agents. The main materials include silicon carbide powders with six different particle sizes and a mass ratio according to particle sizes from large to small is 8:5:8:15:8:10. The binding agents include silicon nitride powders, a sodium silicate powder, an aluminum phosphate powder, a furfuryl alcohol, a silicone resin powder, a silica sol powder, an aluminum sol powder, a silicon oxide micronized powder, a vanadium oxide powder, a silicon powder, a borax and a rare earth oxide micronized powder, and a corresponding mass ratio is 20:10:4:1:5:1:1:2:0.5:0.5:0.5:0.5. The silicon carbide powders in the main materials have a good synergistic effect to improve strength of the repair material. The binding agents include low-, medium- and high-temperature binding agents for a full range of temperatures, so the repair material could gain strength continuously without a collapse temperature.