Automation System
Programmable controllers:

(a) and (c) above
None of these
cannot perform functions other than relay logic
are widely used in many different industries
are programmed using relay ladder logic

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Automation System
There are several procedures you can implement to provide maximum security. The most important of these is:

Verify the reputation of the people installing your system
do not leave training manuals unsecured
None of these
run regular simulated tests using TARP (testing of Applications Recovery Planes)
do not allow unbonded service people to work on your equipment

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Automation System
Ergonomics refers to:

the technology involved in the workstation itself
the cost relationship of the workstation versus productivity
None of these
the human aspect of the environment around the workstation as well as the workstation itself
the level of involvement the operator has with the workstation

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