Post-purge is the process of keeping the burner blower energized for a period of at the end of the heating cycle. This process is also referred to as __________.

A. motor-off-delay
B. valve-on-delay


Answer: A

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In which situation is the open space provided by a courtyard within a building not considered as "frontage" by a building code?

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____________________ is an internally toothed ring gear.

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

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The step in the repair process where the customer is questioned to verify what their concerns are is _____

A) Traffic jam B) Quality assurance C) Appointment D) Work performance

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The shaft support shown in the accompanying figure is an example of a machine part that can be sketched easily by ____.

A. reduction B. blocking C. estimating D. inversion

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