Before deciding to purchase or install an open-loop system, the ____________________ must be evaluated first.
Fill in the blank(s) with the appropriate word(s).
water quality
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Table 2.21 represents a “total analysis” of wastewater has been reported. Note that the pH is not given.
a. Do a charge balance analysis on the data to see if such a solution would be electrically neutral
b. If H+ and OH- are the only ions missing from the analysis, what must their concentration be? i.e. what is the pH and pOH?
What will be an ideal response?
To find the height of the columns or piers, first ____.
A. add the depth of the first floor B. add the distance from the top of the basement floor to the bottom of the column C. determine the dimension from the basement floor to the finished first floor D. subtract the depth of the first floor
____ are products cut from W, S, and M shapes by splitting the webs.
A. Structural tees B. Channels C. Flanges D. Structural tubing
Most digital circuits represent binary values using ________
A) 0 V and +5 V B) -12 V and +12 V C) -5 V and +5 V D) -5 V and 0 V