Gas can be made to conduct a current if a moderately high voltage of ____ volts or more is applied to a gas at a low pressure inside a glass tube.
a. 10
b. 35
c. 50
d. 75
c. 50
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When a fire alarm activates, stair enclosure doors must _____.
a. open b. lock c. close d. unlock
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Which of the following represents the vacuum level that should be achieved on a domestic refrigerator before charging?
A. Low. B. Deep. C. Moderate. D. Very low.
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The bandwidth of a proportional position servo should be __________.
A. small B. large
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