In a ____, unburned products of smoke and gases accumulate in areas of the structure, and when oxygen is introduced the gases rapidly ignite with explosive force.

The corrugated steel decking used to support lightweight concrete floors in steel frame buildings is supported by:

A) open-web joists. B) rods. C) light-gauge joists. D) beams.

An operator would like to smooth condensed amalgam on a filled tooth. Which instrument would the assistant pass to the operator?

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