弯曲时，相对弯曲半径r/t越小回弹越小；弯曲角越大，回弹越大。（）
参考答案：错
Shortly after the book Uncle Tom's Cabin________, the Civil War of America________.
A．came about; broke away http
B．came out; broke out http:/
C．came on; broke up
D．came up; broke down
治疗风湿性关节炎疼痛选用
A．对乙酰氨基酚
B．哌替啶
C．阿司匹林
D．吗啡
E．山莨菪碱
