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This is a conical-shaped recess around a hole, often used to receive a tapered screw head:

A. Boss

B. Spotface

C. Counterbore

D. Countersink

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  1. When using the direct entry method to create a horizontal line exactly three inches long the drafter…
  2. Once a drawing is determined to be complete, the title block is used to document the change from:
  3. The edges of a cube in isometric projection make angles of this many degrees with each other:
  4. This type of structural steel drawing shows all dimensions necessary for fabrication:
  5. This type of circuit is a semiconductor wafer or chip:
  6. Lines of an isometric drawing that are not parallel to the isometric axes are called this:
  7. A round is a rounded surface on the ________ corner of a part.
  8. When using the descriptive geometry method to create an auxiliary view the drafter should __________.
  9. This is a common method for connecting steel members of buildings and bridges:
  10. These maps are used in planning installations of trees, shrubbery, drives, and other garden features:
  11. This is used in applications for nonferrous construction:
  12. Center lines are used to locate or represent the centers of ________.
  13. There should be a visible gap between the wall and the ________ line.
  14. Acceptable parts must not extend beyond this:
  15. The condition of a part when it contains the least amount of material is referred to as ________.
  16. Technical drawings typically serve one of three purposes:
  17. The offset distance for the width (front to back) distance of the auxiliary view is the same distance…
  18. This allows the performance of structures to be analyzed and tested efficiently, accurately, and quickly:
  19. These are lines drawn on a map to locate, in the plan view, points of equal ground elevation:
  20. This is formed where three or more surfaces intersect:
  21. These plans, made by the steel fabricator, are assembly drawings for the steel structure:
  22. A projection weld is a type of:
  23. The foundation contractor will work with the following architectural plans.
  24. EDM is the acronym for:
  25. This is the term for the range of tightness or looseness resulting from the allowances and tolerances…
  26. When lettering a CAD drawing, for clarity you should limit the number of fonts to:
  27. This is the measured size of a finished part:
  28. The UCS icon represents the intersection of the ________.
  29. This type of weld is the most common in structural steel fabrication:
  30. These gears transmit power between shafts whose axes intersect at any angle: