Tech A says that some valve seats can be replaced. Tech B says that newer style valve seats are made of soft materials, so they don’t create as much wear on the valves. Who is correct?

Jean has kept the content of her website limited to what is important; she has also ensured that the text follows a particular style and color all throughout her website. which website features has jean kept in mind? jean has limited the content of her website to what is important; this ensures (clarity, simplicity, harmony and unity) of the content. she has also formatted the text in a particular style and color throughout her website, ensuring (balance, simplicity, consistency)