A string line is stretched between corner stakes on all four sides of the excavation to establish the footing's _____.
a. outer face
b. bottom grade
c. top grade
d. upper face
Answer: C
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Name the views shown on the drawing.
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A ventilation problem may exist when the carbon dioxide level in a room exceeds how many parts per million (ppm)?
a. 500 b. 600 c. 800 d. 1,000
Which of the Following is true?
A. Current is induced in a closed circuit by a changing magnetic field. B. If you multiply a pressure expressed in pascals by an area expressed in square meters, the unit of the result is joules. C. 100 kelvins is a higher temperature than 100 degrees Celsius. D. All of the above are true. E. None of the above are true.
A(n) ___________ is a tube-like tool that people or robots use to direct the electrically charged wire used during welding operations.
A. X-type gun B. C-type gun C. RCC- type gun D. welding gun