問題詳情

14. What is the main function of labyrinths?
(A) To increase the pressure drag coefficient.
(B) To improve the isentropic efficiency.
(C) To prevent leakage.
(D) To reduce the noise.

參考答案

答案：C
難度：適中0.571429
統計：A(1),B(3),C(8),D(1),E(0)