Answer the following statement(s) true (T) or false (F)
If R coil energizes, all R contacts change position.
ANSWER: True
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On the special trucks used to deliver block to the job site, the boom of the forklift has a drop reach of about _____ and is able to swing in any direction.
A. 5 feet B. 6 feet C. 12 feet D. 15 feet
When block work is gradually adjusted so that a difference in height is not evident, it is said to be _____ .
A. leveled B. differentiated C. humored D. parged
For each part of the job, the concrete cover is determined by the _____.
a. architect b. local codes c. structural engineer d. concrete contractor
Following are measurements of soil concentrations (in mg/kg) of chromium (Cr) and nickel (Ni) at 20 sites in the area of Cleveland, Ohio. These data are taken from the article “Variation in North American Regulatory Guidance for Heavy Metal Surface Soil Contamination at Commercial and Industrial Sites”.
Cr: 34 1 511 2 574 496 322 424 269 140 244 252 76 108 24 38 18 34 30 191 Ni: 23 22 55 39 283 34 159 37 61 34 163 140 32 23 54 837 64 354 376 471 a. Construct a histogram for each set of concentrations. b. Construct comparative boxplots for the two sets of concentrations. c. Using the boxplots, what differences can be seen between the two sets of concentrations?