問題詳情
24. 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0.705882
統計：A(0),B(3),C(0),D(12),E(0)