When the fuel oil tank is located above the burner, a __________-pipe oil system is adequate.
A. 1
B. 2
C. 3
D. 4
Answer: A
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What will be an ideal response?
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a. layers b. blocks c. external references d. block tables
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Fill in the blank(s) with the appropriate word(s).
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Fill in the blank(s) with the appropriate word(s).
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