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【单选题】
滚动轴承的代号由前置代号,基本代号及后置代号组成,其中基本代号表示A.
轴承的类型、结构和尺寸
B.
轴承组件
C.
轴承游隙和配置
D.
轴承内部结构的变化和轴承公差等级
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B.
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【简答题】车身分块时,无论车身外表面还是内饰表面及车身结构分块,都是基于功能,工艺和____划分的。
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