Automation System
A common data base is one requisite for converting CAD and CAM to CIM. Another is that:

the user must have access to both hardware and software
the system must make provision for new techniques.
technical assistance must be provided to the user.
None of these
there should be a common 3-D part description system.

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Automation System
A venturi tube:

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

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