27. CdS can be described as cubic closest packed anions with the cations in tetrahedral holes. What fraction of the tetrahedral holes is occupied by the cations?
(A) 0.125
(B) 0.25
(C) 0.50
(D) 0.75
(E) 1.0

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統計: A(5), B(3), C(38), D(4), E(0) #2751642

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