2製做水泥的物質
(A)ㄅ.花崗岩
(B)ㄆ.石灰岩
(C)ㄇ.石墨
(D)ㄈ.硫磺
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統計: A(0), B(6), C(0), D(0), E(0) #2511096
統計: A(0), B(6), C(0), D(0), E(0) #2511096