This invention relates to a hearing device and earpiece therefore. Such compounds may be used in combination with a chemotherapeutic agent andor a potentiator. The ski has a longitudinally extending cambered shape such that, when the gliding structure is positioned on a flat surface, the ski rests on a shovel contact point and a tail contact point. The hypervisor IDT directs an interrupt that is to be handled by the VM to an interrupt handler in a guest IDT without causing a transition to the hypervisor. When the sensor detects the front end of the separated sheet, a power supplied to the pickup roller is stopped, and the separated sheet continues to be transferred by the driving power of the main feed roller and the delivery roller.