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【单选题】
关于混合动力电动汽车错误的说法是___
A. 混合动力电动汽车可以选择小形的发动机,使其工作点处于高效率区
B. 混合动力电动汽车价格便宜,体积小
C. 混合动力电动汽车可以选用发电机回收制动能量,存入蓄电池
D. 混合动力电动汽车可以在停车等候或低速滑行等工况下关闭内燃机,节约燃油
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答案
B
解析
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B. 对小于30%的坡道路面没有要求
C. 大于30%的坡道路面应为水泥路面
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【单选题】
有关传动比的选择,错误的说法是___
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C. 确定最大传动比时,要考虑附着率
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制动器抗热衰退的性能___
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制动时汽车跑偏的原因是___
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