What is the most expensive item ever sold?

The valve seat performs two functions: it provides a seal for the valve in the combustion chamber, and it provides a cool surface to carry heat away from the valve. most valves use a seating angle.

With my drivers ed ! another name for dash lights is a. vehicle problem indicators b. vehicle warning indicators c. vehicle status indicators d. vehicle caution indicators

Hey guys! this is not for school. i my dog gave birth a week ago and we are celebrating them today so i decided to give out a ton of points, a tnx and brainiest to whoever answers the following questions. 1. did you have a good day today. 2. do you like dogs (its okay if you don’t) 3. if you were an animal, what animal would you be? (i am just curious. i would be a unicorn.)