Why is it not always a good idea to install a gauge set and check the system pressure on every system?
What will be an ideal response?
Some units have a critical charge and installing gauges can lose enough refrigerant to make the system undercharged.
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What is the difference between a front-wheel drive and a rear-wheel drive vehicle?
What will be an ideal response?
Weeds have been a part of civilization for as far back as recorded history
Indicate whether the statement is true or false
The phrase "Maximum power is delivered to the load when the load resistance equals the source resistance" is a definition of ________
A) Lenz's Law B) Ohm's Law C) Kirchhoff's Law D) the maximum power transfer theorem
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?