Many interiorscapers use a ____ between the grow pot and jardiniere to catch leachate
a. soft, porous liner c. resin filter
b. hard, plastic liner d. rust-proof metal mesh
B
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Technician A says that a helical gear is stronger than a spur gear. Technician B says that a helical gear is noisier that a spur gear. Which technician is correct?
A) Technician A only B) Technician B only C) Both technicians D) Neither technician
Follow the steps of the Systematic Approach of Section 14.4—that is, (1) identify the system, (2) determine whether the process is batch or rate, (3) construct a schematic diagram with inputs and outputs, (4) Label known material quantities or rates of flow and so on.
An ethanol plant distills alcohol from corn. The distiller processes 2.0 t/h of feed containing 15 percent alcohol and 82 percent water; the rest is inert material. The bottoms (waste) produced is 85 percent of the feed and contains 94 percent water, 3.5 percent alcohol, and 2.5 percent inert material. The vapor (product) from the top of the distiller is passed through a condenser and cooled to produce the final product. Determine the rate of production of the final product and its composition.
How does increased store humidity affect the operation of the refrigerated cases?
A) Operating time is decreased and efficiency increased because of the natural cooling effect of the moist air. B) Operating time increases and efficiency decreases due to increased coil frosting. C) Refrigeration capacity is unaffected, but the food hydration cycles are decreased. D) Operation of the refrigerated cases is unaffected by humidity because they are only providing sensible cooling.
The accompanying figure is showing a(n) ____________________.
Fill in the blank(s) with the appropriate word(s).