题目内容

The minus sign appears because this is an inverting amplifier circuit, that is, the output waveform has the same shape as the input waveform, but is turned upside down, or inverted, compared with the input waveform.

A. 反相放大器
B. 输出波形
C. 负号出现
D. 上下颠倒

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Monitor the input and the output of the system using the oscilloscope. Measure the peak-to-peak amplitude of the final output signal.

A. 示波器
B. 系统的输入和输出
C. 测量
D. 监测

Do your observations using the oscilloscope confirm the above theoretical analysis ?

A. 理论分析
B. 示波器
C. 证实
D. 观察结果

Work through your circuit using the oscilloscope to monitor the audio signal at different points in the circuit.

A. 示波器
B. 音频信号
C. 监测
D. 电路

位于手掌面，小指第二指间关节横纹处的穴位是

A. 肾纹
B. 四横纹
C. 小横纹
D. 掌小横纹