The main ore of uranium is ______________________?
The main ore of uranium is ______________________?
		A. Pitchblende
B. Monazite sand
C. Cassiterite
D. Chalcopyrite
		A. Pitchblende
B. Monazite sand
C. Cassiterite
D. Chalcopyrite
		A. Manufacture of nuclear fuel elements/assemblies
B. Processing of uranium ore
C. Treatment of spent fuel
D. None of these
		A. Slow down the secondary neutrons
B. Absorb the secondary neutrons
C. Control the chain reaction
D. None of these
		A. Coolant
B. Working fluid in power turbine
C. Moderator
D. None of these
		A. Fuel elements
B. Operating personnels
C. Walls of the reactor
D. None of these
		A. Thermal
B. Fast breeder
C. Heavy water moderated
D. Enriched uranium
		A. Plutonium
B. Enriched uranium
C. Natural uranium
D. Thorium