A. Where lubrication is difficult or im-possible
B. Where corrosive chemical action exists
C. Where high temperature exists
D. All of the above
Correct Answer: All of the above ✔
Last Updated: December 22, 2018
A. Where lubrication is difficult or im-possible
B. Where corrosive chemical action exists
C. Where high temperature exists
D. All of the above
Correct Answer: All of the above ✔
Last Updated: December 22, 2018