Automation System
An aneroid barometer

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

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Automation System
Direct Numerical Control means:

eliminating computers from the manufacturing process
complete elimination of a need for a human operator.
None of these
using one computer to control several machines
using several computers to control one large machine

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Automation System
A discrete parts process is:

normally a repetitive series of operations
None of these
often encountered in manufacturing
the same as a continuous process except a different controller must be used
(b) and (c)

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