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提问人:网友zoe237
发布时间:2022-01-07
[主观题]
轴类零件加工中,为了实现基准统一原则,常采用 作为定位基准。 When machining a shaft based on the uniform datum principle, locating surfaces generally select 。
A、选精度高的外圆 High precision outer cylindrical surface
B、选一个不加工的外圆 Rough outer cylindrical surface
C、两端中心孔 Center hole at both ends
D、选一个中心孔和一个不加工的外加工的外圆 A center hole and a rough outer cylindrical surface
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