問題詳情

22.What is the main function of labyrinth packing in a steam turbine engine?
(A)To improve the dynamic balance
(B)To increase the critical speed
(C)To reduce the vibration
(D) To minimize the leakage of working fluid

參考答案

答案:D
難度:適中0.5
統計:A(1),B(2),C(2),D(10),E(0)

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