题目内容

端承桩的摩擦力我们一般是不考虑的。

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输入3位二进制代码的译码器应有（）个输出端。

I returned home but it was still early.

A small fishing boat was carried miles out to sea by the powerful fish.

多个集电极开路门输出端并联且通过电阻接电源时，可实现线与。