問題詳情

11.Strainers should 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：A
難度：適中0.659091
統計：A(29),B(5),C(6),D(3),E(0)