Power Systems
The thermal efficiency of BWR is

None of these
  equal to that of PWR.
 less than that of PWR.
 greater than that of PWR.

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Power Systems
In a pressurized water reactor

 water is used at high pressure so that it is available is liquid from at about 280° C.
  both B and C.
 the coolant water boils in the reactor core.
 heavy water is used as both coolant and moderator.

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