Automation System
The coordinate system used to describe a workpiece:

All of these
is always two-dimensional
None of these
changes from part to part
is defined with respect to a point on the machine

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Automation System
Straight-line operations:

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

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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.
Makes changes on the image by increasing the anode voltage.
Uses an electron gun to continuously flood the surface of the tube.

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