A perfect 30"Hg vacuum is, in reality, unobtainable. So when reference is made to a 30"Hg vacuum, we are actually referring to a vacuum of __________.
A. 25.4"Hg
B. 28.9"Hg
C. 29.29"Hg
D. 29.92"Hg
Answer: D
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Fill in the blank(s) with the appropriate word(s).
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a. ohmmeter b. voltmeter c. ammeter d. thermocouple
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Indicate whether the statement is true or false.