The recovery process on an R-12 or R-134a A/C system should continue until a stable vacuum held by the system for:
A) 1 minute
B) 2 minutes
C) 4 minutes
D) 5 minutes
B) 2 minutes
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Which of these statements does NOT describe relations between British and colonial troops during the Seven Years' War?
A. The British looked down on the colonists as amateurish and contemptible. B. The colonists considered themselves to be on the cutting edge of British civilization. C. The British were dismayed by American shippers trafficking goods to enemy ports of the Spanish and French. D. All colonists freely donated money and men to the British war effort. E. The British refused to recognize any American militia commission above the rank of captain.
The amount of emf induced is proportional to the product of ____ factors that determine the rate of cutting magnetic flux.
a. two b. three c. four d. five
Which switching device uses LEDs?
A) Pickup coil B) Hall effect C) Optical sensor D) Magnetic reluctor
Why is nitrogen considered a "non-condensable" gas?
What will be an ideal response?