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You have me today, Tomorrow ...

You have me today, Tomorrow you'll have more; As your time passes, I'm not easy to store; I don't take up space, But I'm only in one place; I am what you saw, But not what you see. What am I?

Correct answers: 53

The first user who solved this task is Fazil Hashim.

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Why Jesus Was Jewish

Of course Jesus was Jewish. He was 30-years-old, lived with his parents, worked in the family business, and his mom thought he was God's gift to earth.

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Helicopter

In 1922, Henry A. Berliner demonstrated the first helicopter prototype for representatives of the U.S. Bureau of Aeronautics in College Park, Maryland. Berliner made this first ever controlled horizontal helicopter flight in a war-surplus Nieuport 23 fighter with tilting tail rotor, and a short-span upper wing with 14-ft helicopter blades at the tips. It was powered with a Bentley 220 hp engine to the front which turned the two counter-rotating lifting rotors through a series of geared shafts. The two rotors could tilt slightly in opposite directions to control yaw. Two sets of five 36-in x 8-in louvers, located below each rotor, opened and closed differentially to provide roll control by presenting a flat surface, which reacted against the rotor downwash.

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