Wall-mounted underwater luminaires must be installed so that the top of the lens is below the water level at least _____.
a. 5 inches (120 mm)
b. 8 inches (200 mm)
c. 12 inches (300 mm)
d. 18 inches (450 mm)
d. 18 inches (450 mm)
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The term MOST-Likely used to describe wheels that are closer together on one side of the vehicle than the other is:
A. toe change B. wheelbase difference C. thrust angle D. setback
The radius of a twelve-cut pizza is 7.5 inches and the radius of an eight-cut pizza is 5.25 inches. Compare the areas of the two pizzas. Round the answer to 2 decimal places.
Fill in the blank(s) with the appropriate word(s).
The shaft seal on an open compressor is more complicated than the gaskets and seals on other parts of the compressor because:
A) It must seal against a higher pressure. B) It must seal a shaft that is turning. C) It must seal in a vacuum. D) It is subjected to both refrigerant and oil while other seals and gaskets are not.
Properly mixed coolant (50% antifreeze and 50% water) will have a freezing point of ________
A) 32° F B) -34° F C) -20° F D) 20° F