A heat dissipation apparatus adapted for simultaneously cooling a first electronic component and a second electronic component includes a heat sink adapted for being thermally attached to the first electronic component, a fan duct receiving the heat sink therein and a fan mounted to the fan duct. Each radio access network communicates data to and from the mobile device in accordance with one of a plurality of radio access technologies. More particularly, these carboxylic acid-modified vinylic polymeric compositions are produced by the addition polymerization reaction of vinylic monomers in the presence of dimer acids, trimer acids, dimerized rosins, or mixtures thereof. An acquisition unit acquires the comparative image from the image of interest in accordance with result of the decision. A polishing slurry, for CMP, containing abrasive particles, an acid, a tolyltriazole compound represented by the following general formula, and water:wherein R1s each independently represent an alkylene group having 1 to 4 carbon atoms, and R2 represents an alkylene group having 1 to 4 carbon atoms.