Semiconductors have how many electrons in their valence rings?
A) More than four
B) Four
C) Less than four
D) None of these
B) Four
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If a technician connects gauges on the line set of the outdoor unit of a heat pump operating in the heating mode, ____.
A. the high pressure gauge will read the high side pressure and the low pressure gauge will most likely be in the RETARD range B. the high pressure gauge will read the high side pressure and the low pressure gauge will read the suction pressure C. both gauges will read the suction pressure D. the high pressure gauge will read the suction pressure and the low pressure will read discharge pressure
__________ are diseases and infections that can be transmitted from animals to humans.
A. Viruses B. Pathogens C. Zoonoses D. Fungi
Which of the following terms best describes how much of a trait is passed to offspring by genes?
A. Heritability B. BST C. Reproducibility D. RNA
After a TP sensor has been tested using the MIN/MAX function on a DMM, a reading of zero volts is displayed. Which of these does this reading indicate?
A) The TP sensor is shorted B) The TP sensor is open at one point during the test C) The TP sensor signal is shorted to 5-volt reference D) Both B and C are possible