Why are duct friction charts designed for sheet metal duct ducts not accurate for fiberglass ductboard or flexible ducts?
What will be an ideal response?
Fiberduct and flex duct have a higher friction rate than sheet metal, so sheet metal friction charts are not accurate for either fiberduct or flex duct.
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When planting balled and burlapped plants on poorly drained sites, how much of the soil ball should be allowed to extend above grade?
a. 1 to 2 inches c. 6 to 7 inches b. 3 to 5 inches d. 3 to 4 none
Phrases that identify mandatory rules include__________ and __________. Phrases that identify permissive rules include __________ and __________.
What will be an ideal response?
Strips of metal are cut from a 3-foot by 7-foot (84-inch) sheet. Each strip is 3 feet long and 18 1/2 inches wide. Find the number of complete strips that can be made from this sheet.
Fill in the blank(s) with the appropriate word(s).
What are the primary characteristics of a strong acid?
What will be an ideal response?