阿摩線上測驗
34. The stroke-to-bore ratio of a low speed engine is 3：1. When the stroke is 900 mm, the
diameter of bore is what？
(A) 2,700 mm
(B) 300 mm
(C) 3,600 mm
(D) 225 mm
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統計： A(140), B(695), C(57), D(19), E(0) #1813594
統計： A(140), B(695), C(57), D(19), E(0) #1813594
