問題詳情

29.Which device in a boiler has the purpose to prevent a rise in boiler pressure above specified safe limits?
(A)Downcomer
(B) Safety valve
(C)Dry pipe
(D)Economizer

參考答案

答案：B
難度：非常簡單1
統計：A(0),B(1),C(0),D(0),E(0)