The exhaust from any heating appliance that burns a fuel contains a combination of __________, __________, __________, __________ and other trace gasses.
What will be an ideal response?
water vapor, carbon dioxide, nitrogen oxides, carbon monoxide
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Which of the following commercial loads can be fed from a regular circuit rather than an emergency circuit?
a. Exit lights b. Life safety systems c. Fire alarm systems d. Computer equipment
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The roots of maples are surface-feeding and compete with the lawn grass root system
Indicate whether the statement is true or false
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A DOHC V-6 has how many camshafts?
A) 4 B) 3 C) 1 D) 2
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A safe work habit is to ensure that you _____
a. cut toward yourself when cutting b. keep your wrists bent when using hand tools c. use ungrounded, 2-prong electrical plugs d. keep cutting edges sharp
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