Why should the door safety switch be checked before leaving the job?

A) The furnace will operate inefficiently if the door switch opens while it is operating
B) To insure the permanent jumper is secure
C) Nuisance return calls are likely if you fail to permanently disable the door switch
D) To prevent combustion gasses from being circulated in the house


D

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What is the largest cost associated with a typical dairy cow?

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Never use any heat source without teacher supervision

Indicate whether the statement is true or false

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The volume of a solid will:

A) Increase significantly as the temperature of the solid increases. B) Decrease when the temperature increases. C) Increase as the temperature decreases. D) Change very little when temperature changes occur.

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Using a stretcher course and a rowlock course to form each step, how many standard-size bricks are needed to face the surfaces of a flight of 5 concrete stairs if each tread measures 12" deep by 40" wide?  (Refer to the diagram on page 65 in the book.)

What will be an ideal response?

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