____ can conduct disease as it is carried within traveling water droplets
a. Chemical splash c. Water splash
b. High humidity d. Insect spray
C
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Which of the following is used to check the rotating speeds of motors?
a. Insulation resistance tester b. Tachometer c. Spring tension scale d. Stethoscope
The first air-conditioning system was patented in 1844 by:
A) Benjamin Franklin. B) Thomas Edison. C) John Gorrie. D) Willis Carrier.
Where is solid 18 gauge copper wire typically used in residential air conditioning installation?
A) The power wire to the indoor unit B) Inside the equipment supplying power to the major loads C) The power wire to the condensing unit D) The thermostat control wire
Which of the following is true of the fan switch?
A) The fan switch is not separate from the burner. B) Modern fan switches cycle the fan based on time. C) The fan switch relies on a temperature cycle in modern furnaces. D) The fan switch starts the blower when the burner starts.