Automation System
One of the major benefits of using CAD in tool design is that:

None of these
it simplifies the trial-and-error method
there is better coordination in the materials-handling area
product design represents approximately one-half the engineering costs
tool motions can be checked to see if there is interference between the tool and the object

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Automation System
A semi-continuous operation means:

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

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