30.下列何者不屬於推進軸系(Propulsion shafting system)的範圍?
(A)凸輪軸(Cam shaft)
(B)推進軸(Propeller shaft)
(C)中間軸承(Intermediate shaft bearing)
(D)減速齒輪(Reduction gear)
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統計: A(266), B(4), C(6), D(23), E(0) #787895
統計: A(266), B(4), C(6), D(23), E(0) #787895