A.Thepowersupplyisfaultyandshouldbereplaced.
B.Theheatfromaheating，ventilation，andairconditioning（HVAC）registerisbeingreceivedasinfrarednoise.
C.Theradiofrequencyinterference（RFI）isbeingreceivedasnoise.
D.Aplasmadisplayisemittinginfrarednoise.
参考答案：D
