Automation System
The two types of relays in a PC are:

an output relay and a control relay
a retentive relay and a non-retentive relay
a control relay and a retentive relay
None of these
All of these

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Automation System
CAE and CAM are linked through:

assembly automation and tool production.
a common data base and communications system
None of these
parts production and testing
NC tape programming and automated design

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