Power Plant Engineering
Nuclear reactors are used

All of the listed here
To propel ships, submarines, aircrafts
To produce heat for thermoelectric power
To produce fissionable material

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Power Plant Engineering
In nuclear fission

The molecules rearrange themselves to form other molecules
None of the listed here
The original elements change into completely different elements
The electrons of the element change

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Power Plant Engineering
A nuclear unit becoming critical means

It is generating power to rated capacity
There is danger of nuclear spread
It is capable of generating much more than rated capacity
Chain reaction that causes automatic splitting of the fuel nuclei has been established

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