选择题:In the 18th century, there appeared ____ in Englan

题目内容:
In the 18th century, there appeared ____ in England, which owed a great deal to the invention of machines.(本题2.0分)
A、 the Industrial Revolution
B、 the Bourgeois Revolution
C、 the Wars of the Roses
D、 the Religious Reformation
参考答案:

截面上的剪力使研究对象有逆时针转向趋势时取正值,当梁横截面上的弯矩使研究对象产生向下凸的变形时(及下

截面上的剪力使研究对象有逆时针转向趋势时取正值,当梁横截面上的弯矩使研究对象产生向下凸的变形时(及下部受拉,上部受压)取正值A:正确B错误

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