問題詳情
130.下列那一種煤含碳量最高？
(A)煙煤
(B)亞煙煤
(C)無煙煤
(D)褐煤。
(A)煙煤
(B)亞煙煤
(C)無煙煤
(D)褐煤。
參考答案
答案：C
難度：適中0.5
統計：A(0),B(0),C(0),D(0),E(0)
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