Automation System
An aneroid barometer

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

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Automation System
A semi-continuous operation means:

each operation in a sequence is continuous, but subsequent operations in the sequence may be different.
the operation is continuous each shift, but stops between shifts
a computer is a required part of the machine
coffee breaks are allowed for the operator
None of these

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Automation System
The use of specialized workstations:

None of these
reduces the host computer workload
provides limited growth potentials for 3-D
has a high cost-performance tradeoff
reduces the host computer workload and allows more users

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