問題詳情
22. This type of units is covered by a wide range of designs, and they are commonly used,particularly for more viscous liquids such as lubricating oil. What pumps are above description?
(A) Gear and Screw type pumps
(B) Gear and Centrifugal type pumps
(C) Screw and Centrifugal type pumps
(D) Ejector and Centrifugal type pumps
參考答案
答案：A
難度：適中0.54386
統計：A(93),B(41),C(27),D(10),E(0)