An object of the invention is to provide an exhaust emission control device capable of favorably dispersing urea water for improved mixing with exhaust gas even if a flow rate of the exhaust gas is increased. The method also includes detecting a first input to the device that activates a key cloning mode. In a mixed solvent in which a volume ratio EC:DEC between ethylene carbonate and diethyl carbonate at 20\xb0 C. When the peripheral devices include a first peripheral device and a second peripheral device, the controller can directly transfer data stored on the first peripheral to the second peripheral device without requiring the data to be buffered in the host.