A check needs to be performed of all junction boxes, conduit bodies, and disconnect switches to make sure they are ____________________ and suitable for outside installations.
Fill in the blank(s) with the appropriate word(s).
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The CAD cell is a safety device that uses which of the following to prove ignition?
A. heat in the flue B. heat in the combustion chamber C. light in the combustion chamber D. heat in the blast tube
Which one of the following is not a binary arithmetic function?
A) Add B) Multiplexing C) Subtract D) Division
A FIFO can be used as a ________ buffer between a slow device and a computer
Fill in the blank(s) with correct word
Which of the following is an incorrect statement regarding air system fittings and transitions?
A) Their pressure loss is greater than that of a given length of the same size straight duct. B) They can be used to change the direction of airflow in a duct system. C) They have the same pressure loss per foot as the same size of straight duct. D) They can be used to change the velocity of airflow in an air duct system.