問題詳情
36. What is the main function of labyrinth packing in a steam turbine engine？
(A) To improve dynamic balance
(B) To increase critical speed
(C) To reduce vibration
(D) To minimize leakage of working fluid
參考答案
答案：D
難度：適中0.642857
統計：A(2),B(3),C(5),D(18),E(0)