11.有一回歸齒輪系,輸入齒輪A(24齒)與齒輪B(72齒)相嚙合,齒輪C(36齒)與輸出齒輪D(60齒)相嚙合,齒輪B與齒輪C在相同轉軸,若輸入齒輪A轉速為1200rpm,則輸出齒輪D的轉速為多少rpm?
(A)120rpm
(B)240rpm
(C)360rpm
(D)480rpm
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統計: A(1), B(10), C(7), D(7), E(0) #3401895
統計: A(1), B(10), C(7), D(7), E(0) #3401895