A vapor retarder is necessary when _____.
a. ductwork passes through unconditioned spaces
b. only in conditioned spaces
c. only in cold climates
d. when ducts are used for both cooling and heating
a. ductwork passes through unconditioned spaces
Trades & Technology
You might also like to view...
Probably the biggest expense when starting a nursery is the:
A. irrigation system. B. land. C. labor. D. plant material.
Trades & Technology
When using site-layout instruments, the readouts for angular measurements are typically expressed in _____
a. degrees Celsius b. delta values c. decimal fractions d. degrees, minutes, and seconds
Trades & Technology
Use these for measuring angles.
a. gage blocks b. dial indicator c. protractor d. angle block
Trades & Technology
La resistencia total de tres resistores en paralelo con valores de 5, 20 y 50 ohmios es de _____ ohmios.
a. 2,5 b. 3,7 c. 25 d. 75
Trades & Technology