used fuel should be reprocessed
moderator should be used
coolant should be employed
control rods should be used
chain reaction can be initiated
it becomes uncontrollable
it explodes
it produces no power
infinite
zero
exactly balanced by the loss of neutrons through leakage
initiated
at the lower rate than the consumption
at a higher rate than the consumption
at an equal rate of the consumption
depends on other considerations
almost same
slightly more
slightly less
much less