An assembly for extracting liquid from or adding liquid to a mass comprising a housing having an inlet, an outlet and a path therebetween. The jig assembly includes first and second substantially elongated supports, each exhibiting at least one lengthwise extending slot and a substantially flattened end surface. Then, the sample gas reaches an ionization area, where the sample components are ionized due to the effect of light emitted from the plasma. The peripheral regions of the folded clip are pressed toward one another to compress the peripheral regions. An operation determination module determines the kind of the touch operation during the telephone communications with another device. The thickness \u201cb\u201d of a liquid crystal layer corresponding to the concavity is greater than the thickness \u201ca\u201d of the liquid crystal layer at the other positions thereof.