A(n) ____________________ is used as a power system to supply critical electronic equipment.

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


uninterruptible power supply
UPS

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Each year in the United States there are approximately 1,000 people injured in mower accidents

Indicate whether the statement is true or false

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____ are used to anchor posts to concrete floors or footings.

a.Rivets b.Post bases c.Extensions d.Tie rods

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Which of the following is TRUE of the fan switch?

A) The fan switch starts the blower when the burner starts. B) The fan switch is not separate from the burner. C) Modern fan switches cycle the fan based on time. D) The fan switch relies on a temperature cycle in modern furnaces.

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Most people spend over ____% of their lives indoors.

A. 60 B. 70 C. 80 D. 90

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