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What machine element did Leonardo da Vinci sketch as a way to reduce friction between moving parts?
Answer
Ball bearing
What water-powered machine did Leonardo da Vinci design to raise water?
Answer
Water screw
What lifting machine did Leonardo da Vinci design using a threaded screw?
Answer
Screw jack
What rotating weapon did Leonardo da Vinci design with multiple rows of cannons?
Answer
Organ gun
What water-control device did Leonardo da Vinci design to raise or lower boats between canals?
Answer
Canal lock
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What water-powered machine did Leonardo da Vinci design to raise water?
Answer
Water screw
What mechanical worker did Leonardo da Vinci design that is often called a humanoid robot?
Answer
Mechanical knight
What transport machine did Leonardo da Vinci design with a spring-powered mechanism and three wheels?
Answer
Self-propelled cart
What vehicle did Leonardo da Vinci sketch that is often called the first modern tank?
Answer
Armored vehicle
What was the name of the first Pokémon Mystery Dungeon game pair released in Japan?
Answer
Red Rescue Team and Blue Rescue Team