ID refers to the ____________________ diameter of a pipe

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


ANS: inside

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What are the two types of thermocouple temperature sensors commonly used in HVACR work?

A) Positive and negative temperature coefficient thermocouples B) Type 1 and type 2 thermocouples C) Type A and type B thermocouples D) Type J and type K thermocouples

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Compared to groundwater water, surface water usually contains more

a. dissolved minerals b. microorganisms c. dissolved minerals d. fluorides e. hydrogen sulfide

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What is the purpose of the low ambient control on a commercial air conditioner?

A) To permit the unit to cool even at low ambient temperatures B) To cycle the air conditioning system based on ambient temperature C) To prevent the system from operating at low ambient temperatures D) To energize heat strips to control the ambient temperature

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Rubber cushioned screwdrivers can _______ be used on "Live" circuits

A. Always B. Never C. Sometimes D. If marked electrically insulated for live circuits

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