Automation System
In pen plotters, "resolution" refers to the shortest possible line, but in electrostatic plotters it refers to:

dual-axis tracking
the number of dots per inch
the speed per inch
how accurately the plotter returns to a specific point
None of these

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Automation System
A venturi tube:

is made only of metal
None of these
can be used to measure gas or liquid flow rates
is extremely difficult to use
measures the presence of a liquid

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Automation System
Stepping motors:

do not require commutators
can run both clockwise and counterclockwise
All of these
can be built to index different amounts by changing the pole configuration
can run at varying speeds

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