The main purpose of facing on fiberglass board used in cold service is to _____.
a. provide an attractive appearance
b. provide abrasion resistance
c. act as a vapor retarder
d. reflect heat away from the insulation
c. act as a vapor retarder
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A veces se usan láminas de revestimiento y masilla juntas en ____.
a. los codos b. las bridas y válvulas c. las uniones en T d. los biseles
The use of proper diagnostic tools can prevent the unnecessary disassembly of an automatic transmission.
Answer the following statement true (T) or false (F)
The amount of paint required to paint a surface with an area of 50 
is normally distributed with mean 6 L and standard deviation 0.3 L.
a. If 6.2 L of paint are available, what is the probability that the entire surface can be painted? b. How much paint is needed so that the probability is 0.9 that the entire surface can be painted? c. What must the standard deviation be so that the probability is 0.9 that 6.2 L of paint will be sufficient to paint the entire surface?
What is the correct technique for sketching a circle or arc?
What will be an ideal response?