阿摩線上測驗
42. To which place does this schematic seismogram belong?
(A) point A
(B) point B
(C) point
(D) point D
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統計： A(15), B(5), C(24), D(5), E(0) #2160472
統計： A(15), B(5), C(24), D(5), E(0) #2160472