Answer:

1. the process of maintaining or preserving someone or something, or the state of being maintained.
2. Difference between corrective and preventive maintenance
3. In the corrective maintenance type, the operation is done only when there is a failure or malfunction, and on the other hand, in the preventive, as the name indicates, the equipment has maintenance plans to avoid/prevent the most complicated breakdowns
4. To remove salt spray deposits and dirt, rinse the entire compass with clean fresh water and wipe carefully with a damp cloth. Important note: NEVER USE CHEMICALS OR ABRASIVE CLEANERS.
5. Markers, sharpies, and highlighters should be stored upside down to prevent them from drying out. This way the ink stays at the nib, keeping the ink in contact with the felt tip fibers to help your writing utensil last a bit longer.