阿摩線上測驗
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
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統計： A(75), B(93), C(87), D(391), E(0) #1626211
統計： A(75), B(93), C(87), D(391), E(0) #1626211
