When the load factor of a loadingunloading apparatus reaches a second reference value that is smaller in load factor than the first reference value, the operation speed of the loadingunloading apparatus becomes a reduction state. The liner dome can also include more than one flow diverter for redirecting teat dip flow. The latch system secures the component within the electronic device during use but provides for the ready release and movement of the component to an ejected position. The circuit board unit is disposed on the base wall. The inventive layer system comprises a ceramic layer which contains a mixture of two pyrochlore phases. Each of the columnar spacers is disposed with its vertex portion being opposed to a convex portion of the reflector.