Automation System
A venturi tube:

can be used to measure gas or liquid flow rates
is made only of metal
None of these
is extremely difficult to use
measures the presence of a liquid

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Automation System
The "walk-through" method of programming a robot involves:

All of these
walking through your suggested procedure with your supervisor prior to programming
None of these
moving the robot from one location to another
physically moving the robot through all the motions it is to repeat

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Automation System
Direct Numerical Control means:

complete elimination of a need for a human operator.
using several computers to control one large machine
eliminating computers from the manufacturing process
None of these
using one computer to control several machines

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