The most commonly used structural shape is the _____.


a. W-shape
b. S-shape
c.M-shape
d. C-shape


a. W-shape

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An elevated material-staging platform is supported by two or more beams called _____.

a. counterweights b. shoring c. truss girders d. outriggers

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A Pareto chart is best described as:

a. a graphical record of a process variable measured over time. b. a statistical tool used to determine and control process variations. c. a simple bar graph with classifications along the horizontal and vertical axis. The vertical axis is usually the number of occurrences, cost or time. The horizontal axis orders the bars from the most frequent to the least frequent. d. a picture of the activities that take place in a process.

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Boilers produce a variety of steam temperatures and pressures.

a. True b. False

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When a liquid-vapor mix is heated in a closed space, eventually the density of the liquid decreases and the density of the gas increases. When no difference between the liquid and vapor exists, it has reached its:

A) Critical point. B) Critical mass. C) Triple point. D) Thermal equilibrium.

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