Answer: you can watch a video on how to solve this question on you tube
The correct answer is A. Retain. Valve Stem seals
Answer:
c
Explanation:
it's the only engineering career
In metallurgy, non-ferrous metals are metals or alloys that do not contain iron in appreciable amounts. Generally more costly than ferrous metals, non-ferrous metals are used because of desirable properties such as low weight, higher conductivity, non-magnetic property or resistance to corrosion
