Problem To provide a hollow operating lever that is easily manufactured with good operability. The assembly includes a flexible glass layer and an adhesive layer provided on at least one surface of the flexible glass layer. In an exemplary embodiment, a server responds to a demographic query. As a result, a cancellation wave with a phase opposite to the sound wave received by the one membrane is transmitted from the other membrane, whereupon the noise can be attenuated. The terminal has a body and a plurality of tines extending from the body.