By definition, polymers are large molecules made by bonding (chemically linking) a series of building blocks. The word polymer comes from the Greek words for âmany parts.â Each of those parts is scientists call a monomer (which in Greek means âone partâ). Think of a polymer as a chain, with each of its links a monomer.
Save this Post. 3. Re: Rear facing seats in United 747-400 business class. Jan 14, 2013, 7:17 PM. I would still go with the upper deck, even with the 3 less length. The main business cabin on the 744 feels rather cramped in business class. The upper deck seats are much quieter and private. You also have the additional storage compartments along the window side. I have travelled on this plane, but in forward facing seats. We could only see the passengers across the aisle, not those in front of us. The upper deck was quiet, the side storage compartments excellent and the seat pitch more than adequate.
1 - 3 Years. Keep your child rear-facing as long as possible. Itâs the best way to keep him or her safe. Your child should remain in a rear-facing car seat until he or she reaches the top height or weight limit allowed by your car seatâs manufacturer.Once your child outgrows the rear-facing car seat, your child is ready to travel in a forward-facing car seat with a harness and tether.here are different types of rear-facing car seats: 1  Infant-only seats can only be used rear-facing. 2  Convertible and All-in-one car seats typically have higher height and weight limits for the rear-facing position, allowing you to keep your child rear-facing for a longer period of time.