問題詳情
11.What device could permit for a higher-pressure source to supply a lower-pressure service, withan automatic response to changes in demand?
(A)Constant flow fitting
(B)Relief valve
(C)Stop valve
(D)Pressure-reducing valve
參考答案
答案：D
難度：適中0.567568
統計：A(7),B(8),C(0),D(21),E(0)