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What human-shaped machine did Leonardo da Vinci design with internal gears and levers?
Answer
Robot knight
What lifting machine did Leonardo da Vinci sketch using a threaded screw mechanism?
Answer
Screw jack
What wheeled machine did Leonardo da Vinci design that is often called an early automobile?
Answer
Self-propelled cart
What rotating aerial device did Leonardo da Vinci sketch centuries before the modern helicopter?
Answer
Aerial screw
What emergency descent device did Leonardo da Vinci draw as a pyramid-shaped canopy?
Answer
Parachute
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