30 下列各種聚丙烯酸甲脂(polymethacrylate)中,何者軟化點(softening temperature)最高?
(A)聚甲基(methyl)丙烯酸甲脂
(B)聚乙基(ethyl)丙烯酸甲脂
(C)聚異丙基(isoproyl)丙烯酸甲脂
(D)聚正丁基(n-butyl)丙烯酸甲脂
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統計: A(132), B(19), C(49), D(86), E(0) #2098909
統計: A(132), B(19), C(49), D(86), E(0) #2098909