What is a board foot? Cubic foot? Cord?
What will be an ideal response?
A board foot is defined as a piece of rough wood 1 foot long, 1 foot wide, and 1 inch thick, or the equivalent.
A cubic foot of wood is the amount of wood that would be required to fill a space 1 foot wide, 1 foot thick, and
1 foot high.
A standard cord of wood is defined as a stack of wood 4 feet ? 4 feet ? 8 feet.
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Opening a drain or blowdown valve on an operating boiler can result in _____.
a. boiler damage b. flash steam c. a rise in boiler operating pressure d. valve failure
As a technician's rule of thumb, fan speed should not be adjusted more than ________ percent above or below manufacturer's specifications
A) 25 B) 50 C) 10 D) Do not adjust the fan speed.
The base of an extension ladder that is correctly set up will be:
A) 1 foot from the wall for every 4 feet in length. B) As close to vertical as possible. C) Exactly 3 feet from the wall. D) The same distance away from the wall as the height of the ladder.
An automatic air bleed valve controls the airflow out of the system by means of a ____________________.
Fill in the blank(s) with the appropriate word(s).