A system and method for controlling the execution of executable files. The outer coil is formed by winding a plurality of stranded wires in a spiral manner, each of the stranded wires being formed of a plurality of elemental wires twisted together, and the direction of winding of the outer coil is opposite to the direction of winding of the inner coil. Furthermore, in the ESD protection layout, it only needs to add another doped region on a substrate neighboring to, but not contacting, doped regions of the ESD protection elements and use contacts to connect the added doped region, so as to couple each base of the parasitic transistors together without requiring for additional layout area. Consequently, the user can use the cleaning robot more conveniently. The spout is configured to prevent leakage of the condiment therefrom during upside down storage. A hidden terminal condition is identified, based on at least the attempt to detect transmissions from the second client wireless transceiver circuitry by the first client processing circuitry.