____ for residential heating produce heat by burning fuel oil or natural gas, or by using electric heating coils or heat pumps.
A. Inverters
B. Furnaces
C. Heaters
D. Sumps
Answer: B
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What size particle (?m) is most likely to be deposited in the pulmonary region of the lungs?
What will be an ideal response?
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Which of the following animals offers an example of commensalism?
a. cougar c. lion b. deer d. vulture
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When flex duct is hung or run over long distances it must be supported every ________ feet with some sort of non-crimping hanger
A) 20 B) 5 C) 10 D) 15
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Cats have _____ claws, meaning a cat can push out or pull in its claws.
Fill in the blank(s) with the appropriate word(s).
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