39.那一類型的汞齊(amalgam),其潛變值(creep value)最高?
(A)低銅切削型(low-copper lathe-cut)
(B)低銅球型(low-copper spherical)
(C)高銅混合型(high-copper admixed)
(D)高銅球型(high-copper spherical)
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統計: A(1081), B(379), C(128), D(151), E(0) #1633905
統計: A(1081), B(379), C(128), D(151), E(0) #1633905