Automation System
Straight-line operations:

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

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Automation System
In raster-scan colour monitors, colour can be intensified by:

using an in-line gun arrangement with a solid metal mesh
grouping the phosphor dots in a circular pattern
None of these
having each electron gun controlled by a composite signal
having each electron gun controlled by separate signal

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