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 U-235 and U-238.
<上一题 目录 下一题>
热门 试题

单项选择题
Which one of the following that has been working at the making of the atomic bomb from beginning to end
A．Albert Einstein.
B．Harold
C．Urey.C. Ernest O. Lawrence.
D．J. Robert Oppenheimer.
单项选择题
Which of the following does NOT help to separate the useful U-235 and nearly useless U~2387
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
相关试题