  We present the results of our identification of eight objects from a
preliminary catalogue of X-ray sources detected in the 4-12 keV energy band by
the Mikhail Pavlinsky ART-XC telescope aboard the SRG observatory during its
first all-sky survey. Three of them (SRGAJ005751.0+210846,SRGAJ014157.0-032915,
SRGAJ232446.8+440756) have been discovered by ART-XC, while five were already
known previously as X-ray sources, but their nature remained unknown. The last
five sources have also been detected in soft X-rays by the eROSITA telescope of
the SRG observatory. Our optical observations were carried out at the 1.6-m
AZT-33IK telescope of the Sayan Observatory and the 1.5-m Russian-Turkish
telescope (RTT-150). All of the investigated objects have turned out to be
active galactic nuclei (AGNs) at redshifts from 0.019 to 0.283. Six of them are
Seyfert 2 galaxies(including one Seyfert 1.9 galaxy), one
(SRGAJ005751.0+210846) is a "hidden" AGN (in an edge-on galaxy), and one
(SRGAJ224125.9+760343) is a narrow-line Seyfert 1 galaxy. The latter object is
characterized by a high X-ray luminosity (~(2-13)*10^44 erg/s in the 4-12 keV
band) and,according to our black hole mass estimate (~2*10^7 M_sun), an
accretion rate close to the Eddington limit. All three AGNs discovered by the
ART-XC telescope (which are not detected by the eROSITA telescope) are
characterized by a high absorption column density (N_H > 3*10^23 cm^-2). The
results obtained confirm the expectations that the ART-XC telescope is an
efficient instrument for searches of heavily obscured and other interesting
AGNs in the nearby (z<0.3) Universe. The SRG all-sky survey will last for more
than 3 years more, which will allow many such objects to be discovered.
