53.下列何種抗癌藥的作用機制主要是抑制ribonucleotide reductase?
(A)hydroxyurea
(B)methotrexate
(C)mitoxantrone
(D)imatinib
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統計: A(4743), B(1421), C(1665), D(544), E(0) #2180387
統計: A(4743), B(1421), C(1665), D(544), E(0) #2180387