1. Mechanical energy is the sum of ______.
2. The SI unit of mechanical energy is ______.
3. A foundation is the ______ part of a building.
4. The main purpose of foundation is to ______.
5. Which of the following is a type of foundation?
6. A door is mainly used for ______.
7. Windows are provided in buildings mainly for ______.
8. A simple blueprint is a ______.
9. Mechanical energy increases when ______ increases.
10. Blueprint drawings help builders to ______.