Why should a MERV rating always state the air velocity through the filter?
What will be an ideal response?
Because the filter efficiency decreases as the velocity increases
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La chapa que cubre el aislamiento de la caldera se llama _____.
a. revestimiento b. conducto c. cubierta d. cubierta de metal
Passerines are the largest group and include the _____
a. cockatoos b. hookbills c. parrots d. song birds
Many of the methods used to resist earthquake damage will not prevent damage from strong winds.
Answer the following statement true (T) or false (F)
For the following systems, determine whether the system described is best modeled as an isolated, closed, or open system:
(a) an inflated tire (b) a lawn sprinkler actively in use (c) a cup filled with liquid water (d) an engine’s radiator (e) a rock formation 200 m below the surface