問題詳情

12. To ensure the efficient operation of water-tube boilers, there is a compelling demand forclean, and free from gases in solution (e.g. air, oxygen). What equipment is it?
(A) Purifier
(B) Generator
(C) De-aerator
(D) Separator

參考答案

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

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