A method and apparatus associated with various phases of a well completion. When an external module, for example, an ACC module, is added to the electronic throttle control system, and a second preset vehicle speed is inputted from the external module to the electronic control unit the electronic, the electronic control unit selects one of the first and second preset vehicle speeds, which is lower than the other. The at least one flow relief is adapted to provide an increase in total flow area of the bit upon application to the bit of a selected fluid flow condition. The first contact electrode part contacts an electrode of the semiconductor device.