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)