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An oscilloscope is easily the most useful instrument available for testing circuits because it allows you to monitor signals at the input and output of each system block.

A. 对
B. 错

Function generators and oscilloscopes are useful tools in the electronics field. They allow the user to create and measure electrical waveforms when testing electronic devices and circuits.

A. 对
B. 错

An oscilloscope shows you how voltage varies with time. It plots a voltage against time graph on the screen. The y-axis is voltage and the x-axis is time. This is most useful when you look at varying voltages.

A. 对
B. 错

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