If the spray directions call for 2 pints of pesticide per 100 gallons of spray mixture, the amount to use in 12 gallons of spray is approximately
a. 2 ounces
b. 4 ounces.
c. 6 ounces.
d. 8 ounces.
B
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A(n) _________ is a familiar type of transient voltage surge suppressor that is usually bought and installed by the homeowner rather than the electrician.
Fill in the blank(s) with the appropriate word(s).
For the truss in Figure P9.28, compute the reactions and bar forces produced by the applied loads. Given: AE = constant, A = 1000 mm 2 , and E = 200 GPa.
What advantage is there to maintaining a negative pressure on the heat exchanger?
A) The negative pressure helps draw in return air from the house, increasing efficiency. B) Combustion air can only be drawn into the oil burner if a negative pressure is maintained. C) The vent will not work unless the heat exchanger is at a negative pressure. D) Safety; it ensures combustion products do not leak out into the air stream.
The pitch of a thread is 0.250 inch. How far, in inches, is a nut moved in 7.5 turns?
A. 1.875 B. 1.975 C. 2.075 D. 2.175