Straight-line operations: A. must be limited to two per workpiece B. must be parallel to one of the axes of the coordinate system C. can include diagonal cuts if they aren’t curved D. All of the above E. None of the above

The correct answer is: E. None of the above

Straight-line operations are not limited to two per workpiece. They can be parallel to one of the axes of the coordinate system, but they do not have to be. Diagonal cuts can also be included in straight-line operations, as long as they are not curved.

Here is a more detailed explanation of each option:

• Option A: Straight-line operations must be limited to two per workpiece. This is not true. There is no limit to the number of straight-line operations that can be performed on a workpiece.
• Option B: Straight-line operations must be parallel to one of the axes of the coordinate system. This is also not true. Straight-line operations can be parallel to any axis of the coordinate system, or they can be at any angle to the axes.
• Option
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