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Three medical professionals are practicing CPR on a training dummy, demonstrating proper techniques and procedures.
A girl in a school uniform stands at her desk, thoughtfully packing her purple and pink backpack with books and supplies, ready to embrace her first grade adventure at school.
CPR Training Course. Chest compression techniques in a CPR first aid training with a dummy.
US ARMY Private First Class rank patch and dog tags on Desert Battle Dress Uniform background
Two black and white stickers that say first class and quality.
The three classes of levers systems

Free stock photosfirst-class (586)

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Premium Quality rubber grunge sealImage used under license from Freestock.com<a href="https://www.freestock.com/free-photos/premium-quality-rubber-grunge-seal-294650564">Image used under license from Freestock.com</a>
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Best Quality shiny badgeImage used under license from Freestock.com<a href="https://www.freestock.com/free-photos/best-quality-shiny-badge-283580795">Image used under license from Freestock.com</a>
Best Quality rubber grunge sealImage used under license from Freestock.com<a href="https://www.freestock.com/free-photos/best-quality-rubber-grunge-seal-284586536">Image used under license from Freestock.com</a>
Best Quality rubber grunge sealImage used under license from Freestock.com<a href="https://www.freestock.com/free-photos/best-quality-rubber-grunge-seal-282940460">Image used under license from Freestock.com</a>
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