33.下列何種磁性物質,可作為被動勻場(passive shimming)的材料?
(A)diamagnetism
(B)paramagnetism
(C)superparamagnetism
(D)ferromagnetism
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統計: A(14), B(29), C(20), D(32), E(0) #3817868
統計: A(14), B(29), C(20), D(32), E(0) #3817868