In the diagram, determine the value of ?2 if 
.
Fill in the blank(s) with the appropriate word(s).
93°46'
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Which of the following are the code requirements for fire ratings in mechanical/electrical spaces? Select all that apply.
A) Chiller rooms do not need fire ratings unless the refrigerant is flammable. B) A 1-hour room is needed if there is a dry type transformer rating higher than 112-1/2 kVA. C) All gas fired boiler rooms need to be fire rated. D) Electrical rooms with switchboards and panels do not need rated walls.
This is an alloy of iron containing 0.8 to 1.5 percent carbon.
a. alloy cast iron b. nodular cast iron c. malleable cast iron d. steel
If a walk-in is running at a 50° box temperature, what should the evaporator temperature be?
a. 20° b. 25° c. 30° d. 40°
Determine the final ratio of the following: Transmission first gear has a ratio of 2.82:1; drive axle has 3.93:1.
Fill in the blank(s) with the appropriate word(s).