题目内容

构件安全工作必须具备的力学条件?

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构件按几何特征,可分为哪几种类型?

材料力学主要研究各种材料的力学问题。()

A. 对
B. 错

齿轮轴的因为变形,引起了轴承不均匀的磨损,从而使机器不能正常工作,这是强度问题。()

A. 对
B. 错

To transfer plain text to more simplified information for students to understand and memorize easily and provide a basis for further output, we can use () such as a diagram, table, form, map, graph or picture, etc.

A. sophisticated input
B. transition devices
C. output
D. information gap

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