根据《通用安装工程工程量计算规范》(GB50856-2013),配线进入各种开关箱、柜、板时的预留长度为 。
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虚断是指理想运算放大器的两个输入端可以看出没有电流流入。
A. 对
B. 错
集成运算放大器具有同相和反相两个输出端
A. 对
B. 错
理想集成运放的放大倍数AU=∞,输入电阻ri=∞,输出电阻ro=∞。
A. 对
B. 错
Translate the paragraph into Chinese.During one's growth and endeavor, the young may gain success and joy, but may also face difficulties and pressure. One should treat the success and failure at the moment with a correct attitude, not slack in prosperity and not lose faith in adversity. One should consider both the success and failure as wealth in life instead of burdens.–Chairman Xi, 2017