题目内容

用（300～3400）Hz的多频信号进行DSB调幅后的信号频带宽度为（）

A. 300Hz
B. 600Hz
C. 3400Hz
D. 6800Hz

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“The duties of her married life， contemplated as so great beforehand， seemed to be shrinking with the furniture and the white vapour—walled landscape. The clear heights where she expected to walk in full communion had become difficult to see even in her imagination； the delicious repose of the soul on a complete superior had been shaken into uneasy effort and alarmed with dim presentiment. When would the days begin of that active wifely devotion which was to strengthen her husband’s life and exalt her own？ Identify the author and the title of the story from which the passage is taken.

企业对可能发生的资产减值计提资产减值损失，符合（）会计信息质量要求。

A. 权责发生制
B. 实质重于形式
C. 谨慎性
D. 可靠性

压阻式压力传感器利用（）的（）效应而构成。当压力发生变化时，单晶硅产生应变，使直接扩散在上面的应变电阻产生与被测压力成（）的变化，再由（）电路获得相应的电压输出信号。

网络按传播方式分为点到点网络和（）网络。