問題詳情
38. Which devices have a mechanism in the propeller hub that can be operated remotely to change the 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：適中0.666667
統計：A(6),B(3),C(5),D(30),E(0)