Bending involves compressing but not stretching the material.
Answer the following statement true (T) or false (F)
False
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A _____ is a mortar joint that is applied across the full length of a brick.
A. cross joint B. bed joint C. humored joint D. parged joint
A machine operator completes a job in 90% of the estimated time. The estimated time is 20.5 hours. How many hours does the job actually take?
A. 18.45 B. 19.55 C. 15.25 D. 10.11
Posttensioning of concrete slabs is used to _____.
a. reduce the amount of reinforcing steel needed b. shorten the curing time of the concrete c. allow the use of lower-strength concrete d. reduce cracking under heavy load
As crop residue breaks down, it competes with a growing crop for soil ____; therefore, extra ____ may
be needed to assure good crop yields.
a. hydrogen c. nitrogen b. carbon dioxide d. oxygen