Automation System
An assembly language instruction:

All of these
does not require knowledge of the computer design
corresponds to one computer operation
None of these
is written in ones and zeros

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Automation System
A venturi tube:

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

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Automation System
An aneroid barometer

can be used to measure gas or liquid flow rates
None of these
can measure only atmospheric pressure
measures pressure by sensing deflection of an evacuated chambers.
is very unreliable

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