How can we increase the efficiency of a machine ​

Preventive maintenance is where measure are taken beforehand so that the chances of breakdown are minimised resulting in increased efficiency of machines. It is the maintenance that is regularly performed on any equipment to lessen the likelihood of it failing.

Explanation:

Answer from Gauth math

the answer is false?

answer; the tunica intima also called tunica interna, consists of elastic fibers,connective tissue and smooth muscle cells;