43.大多數之開放式磁振造影儀(open MRI scanner)採用下列何種磁鐵?
(A)永久磁鐵(permanent magnets)
(B)電阻性磁鐵(resistive magnets)
(C)超導體磁鐵(superconducting magnets)
(D)不需任何磁鐵
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統計: A(1806), B(102), C(229), D(6), E(0) #1150442
統計: A(1806), B(102), C(229), D(6), E(0) #1150442