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jack |
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jackTool or machine for lifting, hoisting, or moving heavy weights, such as motor vehicles. A screw jack uses the principle of the screw to magnify an applied effort; in a car jack, for example, turning the handle many times causes the lifting screw to rise slightly, and the effort is magnified to lift heavy weights. A hydraulic jack uses a succession of piston strokes to increase pressure in a liquid and force up a lifting ram. jack
jack
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Amaze Entertainment has done an excellent job developing Cartoon Network's Samurai Jack into a viable videogame and SEGA of America is proud to establish a relationship with Warner Bros. In addition, Jellyvision has signed a deal to turn YOU DON'T KNOW JACK into a daily television game show, to be syndicated by Warner Bros. |
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