Which of the following is true about wireless radio signal transmissions?

A. they travel at the speed of light
B. they require an atmosphere to move
C. they travel as discrete particles
D. they require visible light


Answer: A

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Answer the following statements true (T) or false (F)

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Conduit systems in volatile envirnoments must be _____.

a. sealed b. bent c. left uncovered d. galvanized

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While most American workers were strongly committed to the war effort, wartime production was disrupted by strikes led by the

A. Teamsters. B. United Steel Workers. C. Longshoremen's International Union. D. United Mine Workers. E. United Auto Workers.

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What is the face angle of flares used in the HVAC trade?

a. 30 degrees b. 33 degrees c. 45 degrees d. 60 degrees

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