問題詳情
35.Which type of valve is installed to isolate machinery, equipment, and piping components for systemoperation, maintenance and overhaul, and damage control?
(A)Constant-flow valve
(B)Relief valve
(C)Check valve
(D)Stop valve
參考答案
答案：D
難度：適中0.647059
統計：A(1),B(1),C(4),D(11),E(0)