A Type A variable support unit is used where _____ head room is available.
a. limited
b. extensive
c. narrow
d. existing
b. extensive
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. If a greased joint or bearing has a relief port that is removed during greasing, _____.
a. leave it installed until at least an ounce of grease has been added b. greasing is complete once fresh grease emerges from the port c. leave it out for several hours after greasing for pressure to equalize d. it should be replaced with a second grease fitting
The cornice usually does not allow for ventilation of the attic or roof.
Answer the following statement true (T) or false (F)
Why should air velocity in branch ducts be limited to 600 feet per minute?
What will be an ideal response?
Medical professionals have not yet established a procedure for determining if there is a causal relationship between workplace noise and hearing loss.