Engine: Expired / General Subjects

1. A There should be no reinforcement or build-up of material on the top surface, but there should be root penetration along the bottom surface.
2. B There should be a slight reinforcement or build-up of material on the top surface, but there should be no root penetration along the bottom surface.
3. C There should be a no reinforcement or build-up of material on the top surface, and there should be no root penetration along the bottom surface.
4. D There should be a slight reinforcement or build-up of material on the top surface, and there should be root penetration along the bottom surface.

Tip: press A-D to answer