Proceedings of the Particle Physics and Early Universe Conference (PPEUC). For this paper: postscript PPEUC CMB index 1 Introduction.. ... Astro Space Center of P.N.Lebedev Physical Institute , Profsoyuznaya 84/32, Moscow 117810, Russia . We argue that the contribution of cosmic gravitational waves into the large-scale CMBR anisotropy can exceed for a broad class of the inflationary models with effective -term producing the standard local spectrum of primordial cosmological perturbations. ...