Combinations of diuretics and vasopressin antagonists are useful to slow and reverse the symptoms and process of congestive heart failure, to increase the excretion of water in the urine, and to decrease the excretion of sodium and potassium ions in urine. The sourcedrain regions are fabricated to be approximately 100 nm ) in depth with a breakdown voltage of approximately 14 volts or more. A wetting layer is formed on an inner wall of the contact hole. The mounting radius of the torsion springs 74 is shorter than a radius extending to the radial position of the outer circumferential edge of the piston 75 or the friction coupling part 71c. Accordingly, it is possible to simultaneously realize the integration and the miniaturization of the electronic tube and present the display expression for information transmission at a high brightness. Each of the dual reception filters includes at least two reception filters having different frequency bands, and the output side of the reception filters is shared between the reception filters such that a common output terminal is provided for the reception filters.