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    Back view of male engineer taking notes on paper on metal vessel in beer factory — Stock Photo
    Back view of male engineer taking notes on paper on metal vessel in beer factory
    Millennial man in garage holding a motor head in his hands in sunlight — Stock Photo
    Millennial man in garage holding a motor head in his hands in sunlight
    Steel frosted pipe with stopcock covered and fixed with bolt and brought to large stainless steel vessel in light laboratory — Stock Photo
    Steel frosted pipe with stopcock covered and fixed with bolt and brought to large stainless steel vessel in light laboratory
    Man checking gauge while making beer at home brewery — Stock Photo
    Man checking gauge while making beer at home brewery
    First-aiders practicing cardiopulmonary resuscitation on training dummy. — Stock Photo
    First-aiders practicing cardiopulmonary resuscitation on training dummy.
    Medical illustration of artificial heart valve. — Stock Photo
    Medical illustration of artificial heart valve.
    Doctors practicing bag-valve-mask ventilation on training dummy. — Stock Photo
    Doctors practicing bag-valve-mask ventilation on training dummy.
    Vintner in lab coat and hard hat examining stainless steel vat in cellar — Stock Photo
    Vintner in lab coat and hard hat examining stainless steel vat in cellar
    Man holding beer bottle while making beer at home brewery — Stock Photo
    Man holding beer bottle while making beer at home brewery
    Doctors practicing bag-valve-mask ventilation on training dummy. — Stock Photo
    Doctors practicing bag-valve-mask ventilation on training dummy.
    Rusty metal valve of old radiator for temperature regulation in room at home — Stock Photo
    Rusty metal valve of old radiator for temperature regulation in room at home
    Human heart with colored tricuspid valve, computer illustration. — Stock Photo
    Human heart with colored tricuspid valve, computer illustration.
    Human heart anatomy showing aortic valve, digital illustration. — Stock Photo
    Human heart anatomy showing aortic valve, digital illustration.
    Female power engineer adjusting water valves at power plant — Stock Photo
    Female power engineer adjusting water valves at power plant
    Female power engineer adjusting water valves at power plant — Stock Photo
    Female power engineer adjusting water valves at power plant
    Human heart with colored pulmonary valve, computer illustration. — Stock Photo
    Human heart with colored pulmonary valve, computer illustration.
    Side view of crop male worker in mask washing valve of metal tank at work in brewing company during pandemic — Stock Photo
    Side view of crop male worker in mask washing valve of metal tank at work in brewing company during pandemic
    Close-up view of male farmer repairing valve pipe in farm on a sunny day — Stock Photo
    Close-up view of male farmer repairing valve pipe in farm on a sunny day
    Male adult engineer in water treatment plant — Stock Photo
    Male adult engineer in water treatment plant
    Dried marijuana flower buds on table with analytical balance and moisture measuring device in lab — Stock Photo
    Dried marijuana flower buds on table with analytical balance and moisture measuring device in lab
    Various metal containers placed near shabby building wall and water tap on street of town in Gambia — Stock Photo
    Various metal containers placed near shabby building wall and water tap on street of town in Gambia
    Cardiopulmonary resuscitation training dummies. — Stock Photo
    Cardiopulmonary resuscitation training dummies.
    3d rendered illustration of diseased heart valve on white background. — Stock Photo
    3d rendered illustration of diseased heart valve on white background.
    Side view of positive young lady in lab coat checking valves on piping system in industrial facility — Stock Photo
    Side view of positive young lady in lab coat checking valves on piping system in industrial facility
    Copper beer distillery chamber — Stock Photo
    Copper beer distillery chamber
    Closeup view of one grilled scallop on shell — Stock Photo
    Closeup view of one grilled scallop on shell
    Shiny metal sink with chrome tap installed near potted plant in contemporary kitchen — Stock Photo
    Shiny metal sink with chrome tap installed near potted plant in contemporary kitchen
    Man stirring beer in work while making beer at home brewery — Stock Photo
    Man stirring beer in work while making beer at home brewery
    Aortic valve, computer illustration. — Stock Photo
    Aortic valve, computer illustration.
    View of Heart valves — Stock Photo
    View of Heart valves
    Interior of brewery, large steel pipes, valves and control unit for the brewing process — Stock Photo
    Interior of brewery, large steel pipes, valves and control unit for the brewing process
    Front view of senior Caucasian farmer fixing large irrigation water pipe valve in the field at farm — Stock Photo
    Front view of senior Caucasian farmer fixing large irrigation water pipe valve in the field at farm
    Student in wheelchair examining fuel control valves on furnace in HVAC classroom — Stock Photo
    Student in wheelchair examining fuel control valves on furnace in HVAC classroom
    Metal fermentation valves in rows — Stock Photo
    Metal fermentation valves in rows
    Crop unrecognizable male worker in mask washing valve of metal tank at work in brewing company — Stock Photo
    Crop unrecognizable male worker in mask washing valve of metal tank at work in brewing company
    Human vein showing tissue stratification — Stock Photo
    Human vein showing tissue stratification
    Schematic representation of human vein structure — Stock Photo
    Schematic representation of human vein structure