In the P-MP wireless data communication via relay stations, a wireless base station forms a communication schedule between the relay station and the relay station and a communication schedule between the relay station and the subscriber station. According to the invention, said tube is inwardly curved over the entire length thereof between said proximal end and said distal end, and said tube is open at the distal end thereof and makes it possible to receive an assembly forming a flexible tip comprising an axial outlet for liquid anesthetic. The catalyst layer includes a Zr-based composite oxide which contains zirconium, and a rare-earth metal except cerium, wherein a content ratio of an oxide of the non-cerium rare-earth metal to a total amount of ZrO2 and the oxide of the non-cerium rare-earth metal in the Zr-based composite oxide is set in the range of greater than 33 mol % to less than 40 mol %. The multi-layer structure is formed on the first upper surface of the substrate and includes a light-emitting region. The method also includes outputting a list that is responsive to the one or more retrieved lists. Furthermore, the breechblock is unlocked in a released position when the breechblock stop is in the resting position, and the breechblock is locked in an open position when the breechblock stop is in the operative position.