Automation System
A venturi tube:

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

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Automation System
Vision sensors:

can not improve much in the next decade
will more closely match the capabilities of the human eye
None of these
will remain very costly
All of these

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Automation System
An encoder:

is used to send telegraph signals
can have only four keys
converts a binary number to a decimal number.
None of these
converts an input to a binary number

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