A steam cleaning device with a built-in storage for a power cord, brushes and conversion connectors can change steam output devices by switching a first conversion connector with a second conversion connector to achieve multiple function with the same device. The image files are copied into each of a plurality of target storage mediums. A plurality of bandpass filterignitor assemblies are connected in parallel in the system. The recognition management server transmits the image to be recognized to the second terminal group. The first and second reference images are placed at different points on a display screen. In preferred embodiments, the invention further comprises quercetin.