問題詳情
22.Which phenomenon will take place in a steam turbine when the nozzle-passing frequency stimulusis coincident with a turbine blade natural frequency?
(A)Surging
(B)Choking
(C)Knocking
(D)Resonance
參考答案
答案：D
難度：困難0.39823
統計：A(22),B(31),C(15),D(45),E(0)