In a gun-type bomb, Uranium-235 is the fuel. In an implosion bomb, Plutonium-239 is the fuel. A fusion-boosted atomic bomb uses the implosion design, with the addition of gaseous tritium (Hydrogen-3). Producing the appropriate amounts of fuel for bombs is expensive, time-consuming, and difficult.
What does an inhibitor switch do? An inhibitor switch basically tells your vehicle whether its in motion or in park. It can tell the car to park or to go into first gear etc.
The neutral safety switch is a safety device that doesnt allow the  car to be started in gear.   This prevents the car from lurching forward causing injury and  damage. 1 person found this useful. Edit. Share to: Richard Hemingway. 2,936 Contributions. Ship's captain. Master mariner.