After the Great War, What Transpired in the U

question 56

Multiple Choice

After the Great War, what transpired in the U.S. with the use of radios?

• A) Amateurs used surplus radio equipment.
• B) The first commercial radio station opened in Pittsburgh in 1920.
• C) By 1924, over 600 radio stations were operating.
• D) By 1930, 12 million families owned radios.
• E) all of the above

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Definitions:

Heart Murmur

An unusual or abnormal sound heard between heartbeats, which can be innocent or indicate a heart problem.

Extra Heart Beat

An additional heartbeat that occurs outside of the normal rhythm, also known as premature contraction.

End-Systolic Volume

The volume of blood in the ventricle of the heart immediately after contraction, before the heart fills again.

End-Diastolic Volume

The volume of blood in the ventricles at the end of diastole, right before the heart contracts.