题目内容

下列有关轴承的说法，正确的是（）。

A. 滚动轴承是支承轴并承受轴上载荷的标准组件。
B. 滚动轴承基本代号表示轴承的基本类型、结构和尺寸。
C. 当需要在图样上表示轴承时，可采用简化画法（即通用画法和特征画法）。
D. 轴承的规定画法比较复杂，需要画出滚动体和内外圈，其中滚动体不画剖面线，内外圈应画成相同的剖面线。

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滚动轴承一般由内圈、、保持架、四部分组成

6203表示深沟球轴承，内径尺寸15mm。

A. 对
B. 错

30312表示圆锥滚子轴承，尺寸系列代号03，内径为60mm。

A. 对
B. 错

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