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

Makes changes on the image by increasing the anode voltage.
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.
The beam constantly travels across the screen to turn on/off a series of pixels.
None of these

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Automation System
Straight-line operations:

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

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