問題詳情

20. The valve has a bulbous body, housing a valve seat and screw downplug or disc arrange at right angles to the axis of the pipe. Whatkind of valves is above description?
(A) Gate valve
(B) Globe valve
(C) Butterfly valve
(D) Check valve

參考答案

答案:B
難度:適中0.611765
統計:A(10),B(52),C(14),D(9),E(0)

內容推薦

內容推薦