29.螺槳直徑(Diameter of propeller)為螺槳何部位畫圓所得之結果?
(A)前緣(Leading edge)
(B)後緣(Trailing edge)
(C)葉尖(Blade tip)
(D)葉根(Blade root)
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統計: A(27), B(1), C(268), D(13), E(0) #787894
統計: A(27), B(1), C(268), D(13), E(0) #787894