Air brakes use high-pressure air to drive the brake foot against the wheel. Regardless of the type, locomotives use air brakes and hand brakes to stop the engine. Funny, though, I did expect the Kool-Aid Man -- that beloved "spokespitcher" of the mid-1970s -- to burst through the backyard fence, sugary refreshment in hand. Wrench - A hand tool that grips and turns a bolt head or nut. Studies consistently demonstrate that for optimum health, you should eat at least five servings of fruits and vegetables everyday as part of a balanced diet.
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