  We present the results of our identification of 17 X-ray sources detected in
the 4-12 keV energy range by the Mikhail Pavlinsky ART-XC telescope during the
first year of the SRG all-sky survey. Three of them have been discovered by the
ART-XC telescopes, while the remaining ones have already been known previously
as X-ray sources, but their nature has remained unknown. We took optical
spectra for nine sources located in the northern sky $\delta > -20$ deg with
the 1.6-m AZT-33IK telescope at the Sayan Observatory (the Institute of
Solar-Terrestrial Physics, the Siberian Branch of the Russian Academy of
Sciences) and the 1.5-m Russian-Turkish telescope at the TUBITAK National
Observatory. For the remaining objects we have analyzed the archival optical
spectra taken during the 6dF survey. All of the investigated objects have
turned out to be Seyfert galaxies (eight of type 1, seven of type 2, and two of
intermediate type 1.8) at redshifts up to $z\approx 0.15$. Based on data from
the eROSITA and ART-XC telescopes onboard the SRG observatory, we have obtained
X-ray spectra in the energy range 0.2-20 keV for eight sources. A significant
intrinsic absorption ($N_H > 10^{22}$ cm$^{-2}$) has been detected in three of
them, with two of them being probably strongly absorbed ($N_H \sim 10^{23}$
cm$^{-2}$). This paper is a continuation of the series of publications on the
optical identification of active galactic nuclei detected by the ART-XC
telescope.
