80 加強陶瓷材料強度的方法,何者錯誤?
(A)製造缺陷(fabrication defects)
(B)晶體再強化(crystalline reinforcement)
(C)化學強化(chemical strengthening)
(D)溫度調節淬硬(thermal tempering)

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統計: A(158), B(10), C(26), D(27), E(0) #900903