Ответ:

  1. This is the new lathe design.
  2. Those are no longer in use.
  3. This contains the CNC program.
  4. Those were the best weeks of my life.
  5. Can you pass me that wrench?
  6. This is the electrical circuit we need to test.
  7. Those are the main database systems.
  8. I really enjoyed that welding course.
  9. This is my internship summary.
  10. Those belong to the night shift team.