Water fill neck is mounted on the intake manifold of an internal combustion engine. The structural formula of the compound includes two main functional groups. A parameter is applied to the propagating structure that affects the medium. The tip plate contains a plurality of orifices through which molten mineral material flows prior to being attenuated into fibers. The guide guides the cable along a desired direction from the output terminal. The apparatus for generating a planar light source comprises an emitting layer disposed not only on a cathode electrode, but also on a gate electrode as well.