Power Systems
In boiler water reactor (BWR)

 the feed water acts both coolant and a moderator.
 enriched uranium is used as fuel.
  all of above.
 there is danger of radioactive contamination of steam.

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Power Systems
A thermal power station needs space

 less than that required by a gas turbine power plant of same output.
 less than that required by the diesel power station of same output.
 less than that required by atomic power station of the same output.
  less than that required by hydro-power station of same capacity.

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