Automation System
Actuators are used to:

make a mechanical movement
sense an object
All of these
None of these
activate a chemical

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

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

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