Which type of duct material has a high level of friction to air flow?
A. galvanized metal
B. fiberglass-wrapped, spiral duct (flexible duct)
C. fiberglass, fiberboard sheeting
D. round sheet metal
Answer: B
You might also like to view...
The profit maximizing combination of two products to produce is found
A) Where the marginal physical products of the two products is equal. B) Where the iso-revenue line intersects the production possibilities curve. C) Where the iso-revenue line is tangent to the production possibilities curve. D) Where the percentage change in the prices of the two products is equal.
If an open flame is near a type 3 rating, the refrigerant:
A) Will condense. B) Will slowly burn. C) Will not ignite at all. D) Will support combustion.
For tasks that are unfamiliar to the estimator, there may be no historical figures to draw on; therefore, she must be very cautious
Indicate whether the statement is true or false
If two mutually exclusive alternatives have B/C ratios of 1.5 and 1.4 for the lower first-cost and higher first-cost alternatives, respectively: (choose one)
(a) The B/C ratio on the increment between them is greater than 1.4 (b) The B/C ratio on the increment between them is between 1.4 and 1.5 (c) The B/C ratio on the increment between them is less than 1.4 (d) The lower-cost alternative is the better one