题目内容

正数不存在补码,负数的补码可用反码加1求得

A. 对
B. 错

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Many innovations followed and interest in______________ (电动汽车)increased greatly in the late 1890s and early 1900s.

They did not have the vibration, smell, and noise associated with_________________ (汽油车).

While steam-powered cars also had no____________(换挡), they suffered from long start-up time of up to 45 minutes on cold mornings.

They had____________ (豪华内饰), with expensive materials, and averaged $3,000 by 1910.

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