Automation System
Compared to humans, machines:

None of these
can work in harsher environments
can make more complex decisions based on unexpected circumstances
make fewer errors
(a) and (c)

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Automation System
Programmable controllers:

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

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Automation System
The refresh-vector CRT uses which of the following techniques?

None of these
Makes changes on the image by increasing the anode voltage.
Uses an electron gun to continuously flood the surface of the tube.
Creates images on the screen by scanning straight-line vectors between selected points.
The beam constantly travels across the screen to turn on/off a series of pixels.

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