問題詳情
4. What equipment is used to relieve excess pressure. It only fitted on top of boiler and preventspressure to excess in boiler?
(A) Quick closing valve
(B) Relief valve
(C) Globe valve
(D) Safety valve
參考答案
答案：D
難度：適中0.680473
統計：A(9),B(40),C(5),D(115),E(0)