Automation System
A semi-continuous operation means:

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

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Automation System
The use of specialized workstations:

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

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