A plumb bob being set up over a point should be suspended over the point with a clearance of _____
a. less than 1/4 inch
b. 1/4 inch to 1/2 inch
c. 3/8 inch to 5/8 inch
d. at least 3/4 inch
b
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Answer the following statements true (T) or false (F)
In order to create the union of two solid objects, the objects must overlap.
When charging a refrigeration system with a near-azeotropic mixture, what must be done to prevent liquid from entering the system?
A. Charge only as a vapor through the high side. B. Charge only liquid through the high side. C. Charge as a liquid through the low side using a restrictor. D. Charge as a vapor through the low side using a resistor.
Some plant species will only grow in areas where the ground remains saturated for most of the growing season
Indicate whether the statement is true or false
In what year did it become unlawful to knowingly vent CFCs and HCFCs?
A. 1987 B. 1992 C. 1994 D. 1996