Fiberboard duct is joined:
A) With tape and mastic.
B) With staples and UL 181A tape.
C) With sheet metal screws and mastic.
D) Using the mechanically self-sealing joints formed on the end of the duct.
B
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Si un terminal de cuña presenta una eficiencia del 80 % y la resistencia a la ruptura nominal del cable es de 10.000 libras (4.536 kg), el punto de falla del cable es _____.
a. 2,000 libras (917 kg) b. 7,500 libras (3.402 kg) c. 8,000 libras (3.629 kg) d. 10.000 libras (4.536 kg)
When does an oil control ring apply lubricant to the cylinder wall?
A. on upstroke B. on downstroke C. on upstroke and downstroke D. at TDC and BDC
Bulbs are more attractive when planted in a _____
A) pile B) zigzag C) line D) mass
Cadaver detection dogs are trained to detect varying quantities of explosive agents
A. True B. False