Which of the following is NOT a hazard frequently encountered in waste systems?

A. back siphonage
B. improper drainage
C. sewer gas
D. waste products backing up in plumbing fixtures


Answer: A

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?A metal displacement process that is forms shallow cavities or designs is ____. 

A. ?hobbing B. ?etching  C. ?electroforming D. ?electric-discharge

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List three employee rights.

What will be an ideal response?

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For residential air-conditioning units, ____________________ V single-phase is the typical voltage.

Fill in the blank(s) with the appropriate word(s).

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What is the formula for the circumference (C) of a circle given the diameter (d) of the circle?

What will be an ideal response?

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