問題詳情

12.Which equipment is usually required to remove air and noncondensable vapors that leak intothe sub-atmospheric parts of the steam power plant?
(A)Gland sealing
(B)Drains
(C)Air ejector
(D)Labyrinths

參考答案

答案:C
難度:適中0.428571
統計:A(2),B(4),C(6),D(1),E(0)

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