42.下列何者不是板塊運動的主要動力機制?
(A)板塊吸引(slab suction)
(B)板塊拉扯(slab pull)
(C)洋脊拉扯 (ridge pull)
(D)洋脊推擠(ridge push)

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統計: A(1), B(1), C(4), D(4), E(0) #2156823