A light-shielding portion shields the light spot of output light output toward a shunt position \u03b1 by a projecting portion. The hole plug includes a cover having a first side and a second side and defining a peripheral edge and a threaded member having a first end and a second end. Dynamic assembly improves site performance by caching objects that comprise dynamically-generated pages at the edge of the Internet, close to the end user. The display part includes a first display part for displaying information related to an additional function except for a cooling function, and a second display part for displaying temperature information related to the cooling function. The gate electrode is formed on the gate insulator and in the groove. According to the invention, the two functions \u201ccooling\u201d and \u201chumidification\u201d are combined in a functional unit to adjust the temperature of the air supplied as the reaction medium and to humidify it.