Aqueous dispersion comprising silicontitanium mixed oxide powder with a BET surface area of 5 to 500 m2g which has been prepared by flame hydrolysis and has a titanium dioxide content of 0. An AWES blade, getting wider and thicker toward the external tip. A plurality of communication nodes perform communication by the network management protocol with the agent node. The supercharger and an end portion of a main gallery communicate with each other via an oil supply pipe. Various settings based on the setting screen, setting procedure, and contents of setting personalized for the operator are transmitted via the network to the external service, together with the image data.