問題詳情
9. 芮氏地震規模量級中，強度與能量的關係為r＝f (x)＝log10 x，其中r為強度，x為地震散發的能量。試問：強度6.8的地震散發的能量是強度3.8級地震散發能量的______倍。
參考答案
答案：C
難度：非常簡單0.962914
統計：A(6),B(7),C(727),D(15),E(0)
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