单项选择题

Which of the following does NOT help to separate the useful U-235 and nearly useless U-238

A．The principle of gaseous diffusion.
B．A process involving magnetic separation of the two isotopes.
C．A process nearly identical in the chemical makeup.
D．A gas centrifug

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热门试题

单项选择题

Which of the following did NOT cause so much trouble for the making of an atomic bomb

A．Extraction of uranium.
B．Sustentation of a reaction.
C．Conversion from uranium ore to uranium metal.
D．Separation of 1 U-235 and U-238.

单项选择题

Which of the following is the least possible reason for the launching of the Manhattan Project

A．FranklinD. Roosevelt.
B．Nazi Germany.
C．Albert Einstein and other scientists.
D．The Second World War.