Although local ordinances may require a single main disconnect, the Code® allows for a maximum of ____________________ service disconnect switches.
Fill in the blank(s) with the appropriate word(s).
6
six
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________: specific form of current production costs that do not vary with the level of output or input use.
Fill in the blank(s) with the appropriate word(s).
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Although packaged air-conditioning equipment comes precharged with refrigerant and no field piping must be done, the installation of a rooftop package unit involves many steps and can be very dangerous.
Answer the following statement true (T) or false (F)
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The throttle position sensor is an output component
Indicate whether the statement is true or false
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Some pumps are equipped with a type of packing that has _____
A) absorbant material B) no leaks C) ball bearings D) some expected leakage
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