____ is part of the normal production of glass.

A. Sandblasting
B. Tempering
C. Annealing
D. Silvering


Answer: C

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Steel is a noncombustible material. So why do steel components in buildings, such as W-section beams, steel joists, and joist girders, need protection against fire?

What will be an ideal response?

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PVC pipe that does not require a solvent weld is joined by a ____________________

Fill in the blank(s) with correct word

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Short-tailed opossums are __________

a. primarily diurnal by nature b. considered very social animals c. equipped with a fully prehensile tail d. one of the smallest marsupials

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List three types of circuits and describe each.

What will be an ideal response?

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