問題詳情

25.Which devices have a mechanism in the propeller hub that can be operated remotely to changethe propeller pitch from a maximum design ahead pitch to a maximum design astern pitch?
(A)Fixed angle propellers
(B)Fixed pitch propellers
(C)Detachable-blade propellers
(D)Controllable-pitch propellers

參考答案

答案:D
難度:簡單0.857143
統計:A(0),B(2),C(1),D(24),E(0)

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