During each switching cycle, the energy dissipation has no dependence on the resistance of the device. A: ) True B: ) False

Which of the following is not a function of modern lubricants A: Reduced friction B: Heat insulation C: Sealing D: Heat dissipation

与X线的产生条件无关的因素是The factor unrelated to the generation of X-rays is? 阳极散热Deat dissipation of the anode|电子源Electronic source|电子的骤然减速Sudden deceleration of electrons|高压电场High voltage electric field