The percentage of impurities removed from water by a distillation system is approximately _____.
a. 33 percent
b. 50 percent
c. 75 percent
d. 99 percent
d. 99 percent
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An IR remote control sends a 25-bit sequence every 0.01 s. The data rate of this remote control equals _______ bps.
Fill in the blank(s) with the appropriate word(s).
The Senate is more farmer friendly than the House
Indicate whether the statement is true or false
Insurance companies established the ______________________________ organization in an effort to reduce the number of fires caused by electrical equipment.
Fill in the blank(s) with the appropriate word(s).
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.