Receiving an instruction indicating a source operand and a destination operand. The devices can access a server over the Internet via a WIFI or other similar wireless interconnection and can download songs requested by a user from the server or from other users using, e. The undesired side-effects of false button activations, including battery drain and activation counter drift, are thus avoided, increasing the device’s lifespan and user convenience. Attached to the collection receptacle is a drainage tube connected an external suction device. In this manner, the flow velocity in the gap increases, and flow velocity distribution inside the injection hole is uniformized, thereby suppressing an increase in penetration.