Fire extinguishers that can be used on any type of fire, A, B, or C generally contain a _____ to extinguish the fire.
A. water
B. carbon dioxide
C. nitrogen
D. dry chemical powder
Answer: D
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The minimum diameter of galvanized pipe allowed for a grounding electrode is _____.
a. 1????2" b. 3????4" c. 1" d. 1-1????4"
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Which of these substances is used to pickle food?
a. fish oil c. sugar b. salt d. vinegar
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When ductwork fittings are fafricated, there is more waste with fittings than straignt duct.
Answer the following statement true (T) or false (F)
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When lowering the relative humidity of the conditioned air, a window air conditioner is removing latent heat.
Answer the following statement true (T) or false (F)
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