問題詳情
37.An ejector's performance can be rated based on the ratio of the pressure at the dischargeport divided by the pressure at the suction port, also referred to compression ratio. For the ejector with pressures at the discharge and suction ports of 2 and 0.5 bars, the compression ratio is .
(A)1
(B)1.5
(C)2.5
(D)4
參考答案
答案：D
難度：適中0.529412
統計：A(1),B(6),C(9),D(18),E(0)