Los combustibles para calefacción que más se utilizan son:

a. el gas natural y el aceite.
b. el carbón y la madera.
c. la madera y el gas natural.
d. el aceite y la madera.


a. el gas natural y el aceite.

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Which of the following terms describes an intermediate vertical member of a window frame?

A) Mullion B) Stile C) Rail D) Jamb E) Muntin

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The electrical source refers to the electrical energy being supplied to equipment.

Answer the following statement true (T) or false (F)

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Technician Asays the output of a Hall-effect sensor can be checked with an AC voltmeter. Technician B says output of a magnetic pulse generator can be tested with a lab scope. Who is correct?

A. Technician A only B. Technician B only C. Both Technician A and B D. Neither Technician A nor B

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To check level conditions over a significant distance, such as a building foundation or longer distance, the best

level to use is a _____. a. torpedo level b. laser level c. digital level d. spirit level

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