One construction worker should ride the elevator with materials that are being lifted to the mason.
Answer the following statement true (T) or false (F)
False
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A correction factor must be applied if the ambient temperature is above _____.
a. 30°F b. 36°F c. 80°F d. 86°F
The statement that is MOST-Likely true is:
A. R-134A has a 10-30 psi increase on the high side and it is 60-70 warmer. B. the low side pressure with R-134A is typically 3 pounds more than with R-12. C. R-134A is about 15% more efficient than R-12. D. R-134A requires less weight of refrigerant during a refill because R-134A is a different density.
What is a hydronic terminal unit?
A) The coils and devices that heat the building B) The last convector in a hydronic loop C) A unit that is specifically designed for use in airports and train stations D) A reverse return loop that is installed on the end of a hydronic run
Brass is a widely used alloy of ____.
A. copper and zinc B. copper and tin C. phosphorous and bronze D. copper and bronze E. none of the above