A cleaning device includes a cleaning portion and a driving portion. The method further comprises receiving a plurality of selections of the selectable elements, and after receiving the plurality of selections, revealing the outcomes associated with the selected elements. The output portion of the memory is thus selected by selectors in accordance with the number of pixels in the horizontal direction of the LCD panel, such that LCD panels having the different numbers of pixels can be driven with the same structure. In one embodiment, the at least one biasing member is a flexible material stretched across the base top surface. By adding an extremely small amount of Ti, V, Zr, Ta or Nb or a combination of these, a grain refined cemented carbide structure with less abnormal WC-grains has been obtained. The carrying portion is disposed outside of the metal shell member.