問題詳情

19. Strainersshould be provided with indicators to provide warning of the necessity for cleaning the strainers.
(A) pressure-drop
(B) temperature-drop
(C) reverse-flow
(D) overflow

參考答案

答案:[無官方正解]
難度:非常困難0
統計:A(2),B(1),C(1),D(1),E(0)

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