Electrical ____ is the flow of electrons.
a. circuit
b. current
c. charge
d. neutrality
b. current
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El circuito de un timbre residencial es probable que incorpore un transformador _____.
a. de instrumentos b. rebajador c. de corriente d. reductor-elevador
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Dogs have been used by people:
a. to pull sleds c. as a form of therapy b. for military purposes d. all answers
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____ amplifiers are used for high gain at low frequencies or for amplification of a direct-current signal.
A. Operational B. Audio C. Direct-coupled D. RF
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All drawings should be lightly numbered.
Answer the following statement true (T) or false (F)
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