Scavenging supplies fresh air for proper fuel/air combustion in marine engines. Turbocharger drives scavenging air, auxiliary blower provides extra pressure during maneuvering. System purges exhaust gas and removes unburnt fuel and carbon. Incomplete scavenging reduces engine power output
Prevent fire spread in HVAC ducts through fire-resistant walls and floors. Close automatically when temperature rises above ambient. Can be activated by thermal elements or fire alarm systems
Consists of three or four rotating doors on central shaft. Designed to relieve stack effect pressure in high-rise buildings. Acts as airlock, preventing drafts and energy loss. Can accommodate large loads and display small objects
Supplies fuel/air mixture to engine cylinders through intake ports. Creates partial vacuum for auxiliary systems and positive crankcase ventilation. Mounts carburetor, throttle body, and other engine components
Smelly socks develop foul odor from prolonged wear on feet. Their odor contains ammonia, fatty acids, and lactic acid. Strong odor arises from bacterial action on sweat accumulation
Shooting ranges are facilities for firearm training, practice and competitions. Most ranges are privately owned by civilians and sporting clubs. Indoor ranges offer shelter from weather and operate 24/7. Outdoor ranges are located away from populated areas