14. What is the purpose of a moderator surrounding the uranium cylinder in a nuclear (fission)
reactor core?
(A) To slow down the neutrons
(B) To accelerate the neutrons
(C) To produce a particles
(D) To absorb B particles

(E) To absorb the neutrons

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統計： A(2), B(0), C(0), D(0), E(0) #2824279