67. In the unit cell of face-center cubic, the ratio of tetrahedral holes to atoms (or ions) is ______.
(A) 1:1
(B) 1:2
(C) 2:1
(D) 1:4
(E) 4:1
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統計: A(0), B(1), C(0), D(0), E(0) #3853582
統計: A(0), B(1), C(0), D(0), E(0) #3853582