Automation System
A semi-continuous operation means:

None of these
a computer is a required part of the machine
each operation in a sequence is continuous, but subsequent operations in the sequence may be different.
the operation is continuous each shift, but stops between shifts
coffee breaks are allowed for the operator

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Automation System
An aneroid barometer

can be used to measure gas or liquid flow rates
None of these
can measure only atmospheric pressure
measures pressure by sensing deflection of an evacuated chambers.
is very unreliable

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Automation System
The main function(s) of computer in CAD is/are

All of these
To relieve the designer from routine repetitious tasks.
To enhance the analytical and logical power of the designer
To serve as an extension to the memory of the designer
None of these

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