How often must a recovery cylinder be retested?
What will be an ideal response?
Refillable cylinders used to recover refrigerant must be inspected and hydrostatically tested a minimum of once every five years in accordance with Title 49 CFR Section 180.205. Some cylinders also have a last permissible use date. These are commonly known as 5 + 5 cylinders. They can only be re-qualified one time. These cylinders may not be used past the last permissible use date.
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What does flame spread index (FSI) mean? Does FSI apply to a material or an assembly?
What will be an ideal response?
If the 7 MGD accounted for all withdraw from the groundwater table, what is the average net gain or loss from the groundwater table in MGD?
The average yearly precipitation in the Shenandoah Valley watershed is 36 inches. The average rate of evapotranspiration is 28 inches. Typical runoff through the Shenandoah River is 163 
(cfs). Reservoirs within the watershed store 28 million gallons of water. The area of the watershed is 7.5 x 
ft2. Currently, consumptive use of water is 7 million gallons per day (MGD). There are 7.48 gallons per cubic foot.
What will be an ideal response?
Which undercarriage configuration is best for pulling a scraper, and for winching or ripping?
A. Standard B. XL C. XR D. LGP
Why did the festival to the god Dionysus in Athens become another opportunity for civil and political discourse?
a. Most of the tragedies were based upon well-known myths about the gods and the foundation of Athens. b. The tragedies were propaganda paid for with imperial tribute that explored the hubris of Athenian imperialism. c. The tragedies strove for elevated models of perfection based on theories of almost mathematical precision. d. In the hands of the great playwrights, these tragedies probed universal human problems and, under their guise, contemporary Athenian crises.