A ________ is a device that controls the flow of electricity on a circuit for a certain amount of time.

a. four-way switch
b. timer
c. motion sensor
d. single-pole switch


b. timer

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The ____________________ bath air cleaner is a common type of air filter used in older engines.

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

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Determine the height of gage blocks required to set an angle of 17o22' on a 5'' sine plate. Give your answer to the nearest thousandth inch.

A. 1.735 B. 1.888 C. 1.492 D. 1.012

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Technician A says that wet asbestos is known as hazardous waste. Technician B says that dry asbestos is known as solid waste. Which technician is correct?

A) Technician A only B) Technician B only C) Both technicians D) Neither technician

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For a gravity system to work, the primary water supply must be __________ feet above the highest point in the water distribution system.

A. 50 B.100 C. 150 D. 300

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