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• 38 What are those large poles for that are always in front of US stand-alone store buildings?
• 27 How do bike wheels keep turning when the rider stops pedalling?
• 26 Why are some public benches made with arm rests that waste so much space?
• 24 Why are most jigsaw blades designed to cut on the up stroke and have teeth that point towards the shank?
• 16 What instructions should I give to an untrained passenger for Hand propping Cessna 172N as a pilot?
• 16 Is it structurally sound to cut an I beam to a T on one end?
• 16 What is the term for diagonal bars which are making rectangular frame more rigid?
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