問題詳情
6. What following set of pumps is positive displacement type?
(A) Rotary pump and Reciprocating pump
(B) Centrifugal pump and Injection pump
(C) Centrifugal pump and Rotary pump
(D) Volute pump and Injection pump
參考答案
答案：A
難度：適中0.553459
統計：A(88),B(33),C(27),D(11),E(0)