What are the three necessary and sufficient criteria that must be satisfied by all plastics materials?
What will be an ideal response?
The material must be (a) composed of very large (polymeric) molecules, (b) must be synthetic, and
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What will be an ideal response?
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These are thin lines used to establish the extent of a dimension.
a. object lines b. leader lines c. dimension lines d. extension lines
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The fire source for a fire pit can utilize which of the following fuel sources?
a. wood b. natural gas c. propane d. any of the above
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Groundwater is held in natural storage areas underground called _____
A) wells B) ponds C) aquifers D) aqueducts
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