Engineering Drawing
How can the drafter prevent Auto-CAD from placing or stacking another center mark on a circle when adding a diameter dimension to it?

It can't be done
Explode the dimension and then erase the center mark
Use the trim tool to take away the stacked center mark
Use the Properties dialog box to turn off the center mark of the dimension

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Engineering Drawing
Three dimensional models are often used in the design process to ________.

Help the client select a color for their carpet
Help the client understand the overall design concept
Provide the client with a model which they can use to impress their friends
Determine the quantity of brick needed to build the house

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