問題詳情
18.The concept of ___________, aimed at increasing the thermal efficiency of a heat engine, uses heat that would normally be rejected into the low-temperature sink to preheat the air into the combustion chamber.
(A) regeneration
(B)reheat
(C)re-expansion
(D)superheat
參考答案
答案：A
難度：適中0.44186
統計：A(19),B(5),C(7),D(10),E(0)