题目内容

变速器倒挡传动比数值设计得比较大,一般与一档传动比数值相近,这主要是为了倒车时,汽车应具有足够大的驱动力。

A. 对
B. 错

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变速器的某一档位的传动比既是该挡的降速比,也是该挡的增矩比。

A. 对
B. 错

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