Improperly stored ceiling tiles can expand or warp, causing a poor fit, as a result of _____.
a. exposure to temperatures below 10°F
b. boxes being stood on edge
c. exposure to temperatures above 100°F
d. excessive humidity
Answer: D
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If the phase angles of two sine waves are both 0 degrees, then the waves _____.
a. are in phase b. are 90 degrees out of phase c. have the same peak voltage d. have the same amplitudes
Which of these choices correctly lists ions in the order decreasing (strongest to weakest) order of attraction to clay colloids?
a. potassium - calcium - aluminum - sodium b. potassium - aluminum - calcium - sodium c. aluminum - calcium - sodium - potassium d. aluminum - calcium - potassium - sodium
List two ways that you can identify a component by its name
What will be an ideal response?
An example of a back charge includes all of the following except _____.
a. providing labor and equipment to remove trash for another trade b. maintaining job site logs for individual trades’ safety inspections c. furnishing a pump to another contractor to remove trench water d. lending scaffolding to another contractor to complete their work