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Assinale a alternativa que apresenta a característica da onda de rádio AM que deve ser variada para que seja possível a transmissão do sinal.

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Um sinal em tempo continuo com amplitudes discretas.

",{"_22":82,"_59":65,"_61":89},"

Um sinal em tempo discreto com amplitudes discretas.

",{"_22":91,"_59":69,"_61":92},"a947696b-4727-4d45-a64c-7c15f8d76303","

Um sinal em tempo continuo com amplitudes continuas.

",{"_22":94,"_59":95,"_61":96},"172076c6-2b0d-4b25-a50b-bc428c31afbe","D","

Um sinal em tempo discreto com amplitudes contínuas.

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Um sinal digital - analógico.

","

Por definição um sinal quantizado é:

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