Which symbol is used to indicate safe lifting points?
A) Triangle B) Circle C) Square D) None of these
A
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An example of a pozzolanic material used in making very high-strength concrete is _____.
a. silica fume b. hydrated lime c. liquid epoxy d. diatomaceous earth
Which of the following are advantages of hub-piloted truck disc wheels when compared with cast spoke wheels?
A. fewer alignment problems B. lighter weight C. extended tire life D. all of the above
An RLC series circuit has R = 42 ?, XL = 80 ?, and XC = 24 ?. What is angle theta?
A. 36.87° B. 53.13° C. 59.74° D. 62.33°
Which statement is true regarding steel as used for structural support in construction?
A. steel will not begin to fail until it reaches temperatures of over 2000 degrees F. B. steel will always buckle in the middle before it fails C. steel may begin to fail at 1000 degrees F. D. steel trusses will last longer than wood trusses under fire conditions.