| Concerning the start-up of plain bearings utilizing the three modes of hydrodynamic lubrication, what is the correct sequence of modes from start-up through coming up to operational speed? |
| A) First full-film lubrication, followed by boundary lubrication, then finally mixed-film lubrication. |
| B) First boundary lubrication, followed by mixed-film lubrication, then finally full-film lubrication. |
| C) First boundary lubrication, followed by full-film lubrication, then finally mixed-film lubrication. |
| D) First mixed-film lubrication, followed by boundary lubrication, then finally full-film lubrication. |
