Question: _ sprinkler systems cannot be used in environments subject to freezing temperatures. Preaction Dry-pipe Wet-pipe Customized new style Question at position 10 10 Multiple Choice

_ sprinkler systems cannot be used in environments subject to freezing temperatures. Preaction Dry-pipe Wet-pipe Customized new style Question at position 10 10 Multiple Choice 4 points Question at position 10 There are several different instruments available for measuring the air pressure in a forced-air distribution system, but all are classified as ___. gauges registers grilles manometers Question at position 11 11 Multiple Choice 4 points Question at position 11 A(n) ___ is a sensor and switch or probe that opens the combustion circuit of a boiler in the event of a low water condition aquastat float control valve pressure-reducing valve low water cutoff

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