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

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

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Automation System
Pressure sensors:

All of these
use capacitive variations to sense pressure
use an aneroid chamber with a variable resistance output
None of these
use the piezoresistive effect in strain gauge sensors

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