Which among the following was invented by Orville and Wilbur Wright, popularly known as Wright brothers, in 1903 ? (A) Submarine (B) Hovercraft (C) Helicopter (D) Aeroplane
Why did Aeroflot Flight 593, a "Russian Airlines" Airbus A310 passenger airliner, crash into a hillside in Kemerovo Oblast on 23 March 1994, killing all 75 passengers and crew?