• 2022-06-28
    [img=164x160]178692f96d61bf4.jpg[/img]下列定容回热制冷循环,循环的制冷系数为:
    A: ε=qE/w
    B: ε= TE/(TC-TE)
    C: ε= TC/(TC-TE)
    D: ε= TE/(TE-TC)