Automation System
The rectangular boundary around a specific area on the display is called

a conic section
a view point
a window
None of these
a view plane

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Automation System
The refresh-vector CRT uses which of the following techniques?

None of these
The beam constantly travels across the screen to turn on/off a series of pixels.
Creates images on the screen by scanning straight-line vectors between selected points.
Uses an electron gun to continuously flood the surface of the tube.
Makes changes on the image by increasing the anode voltage.

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Automation System
Straight-line operations:

None of these
must be limited to two per workpiece
can include diagonal cuts if they aren't curved
must be parallel to one of the axes of the coordinate system
All of these

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