Soot forming in the heat exchanger can be caused by

A) the presence of coal tar in the gas B) Too much gas in the gas air mixture
C) Too much air in the gas air mixture D) Excessively high combustion temperatures


B

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IDENTIFY TEST PROCESS SYMBOLS AND DIAGRAMS

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The number of inputs to an N-input AND gate in an efficient Mod-1000 counter is N=____.

Fill in the blank(s) with the appropriate word(s).

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____________________ are sometimes added to cattle, sheep, swine, and poultry rations to prevent

the disease coccidiosis

Fill in the blank(s) with the appropriate word(s).

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When a gas furnace ignites and is under "full-fire," why does the fan not come on immediately?

What will be an ideal response?

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