  In this talk, we discuss several topics related to the Abelian-projected
SU(3)-QCD. First of them is the Aharonov-Bohm effect emerging during the
extension of this theory by the introduction of the $\Theta$-term. Another
topic is devoted to various consequences of screening of the dual vector bosons
by electric vortex loops. In particular, it is demonstrated that this effect
modifies significantly the interaction of quarks. Next, the influence of
screening to electric and magnetic field correlators in the four-dimensional
Abelian-projected SU(3)-QCD is studied. Finally, the bilocal correlator of
electric field strengths in the three-dimensional gas of SU(3)
Abelian-projected monopoles is discussed.
