Membean provides guided, engaging, multimodal vocabulary instruction while our Adaptive Reinforcement Engine helps students retain what they learn. â 1  Multiple ways to learn each word. â 2  Customized learning for each student. â 3  Web-based, nothing to install.
EGR, which stands for Exhaust Gas Recirculation, comes equipped on most new vehicles, as well as some older models. The EGR valve recirculates burned exhaust emissions back into the intake system so the emissions can be re-burned, or recycled, out the exhaust.
The return vent, or register, is also known as an air return vent, and a cold air return vent. It accomplishes just what the various names imply, return colder air, via registers and ductwork, to the furnace so that it will run as designed. Return vents also provide proper air circulation throughout the structure.