A major difference between the operation of an oil furnace and a gas furnace is that:
A) The oil must be atomized before ignition.
B) Oil has a lower heat content value than gas.
C) Oil furnaces do not burn as hot as gas furnaces.
D) It is more difficult to set up a gas furnace to burn cleanly.
A
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a. inclined plane b. third-class lever c. screw principal d. basic pulley concept
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Arrowheads are used to terminate ______________________________ and ____________________.
Fill in the blank(s) with the appropriate word(s).