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)