单项选择题

集中力作用处，梁的弯矩图（）
A、无变化
B、突变
C、尖点
D、不确定

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单项选择题

Harding's plan was ______.A.to stay in the village as long as he couldB.to cross into another countryC.to reach the church and rest thereD.to have his foot made well again

A.A.to
B.to
C.to
D.to

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