問題詳情
13.Which device in the jacket water cooling system is used to maintain a static head on the suctionside of the system, and provide a convenient point for collecting vents and adding make-up feed?
(A)Gear pump
(B)Displacement pump
(C)Expansion tank
(D)Circulating pump
參考答案
答案：C
難度：適中0.488889
統計：A(7),B(4),C(22),D(11),E(0)