强度-时间曲线检查结果分为（）
A.完全失神经曲线
B.绝对失神经曲线
C.部分失神经曲线
D.轻度失神经曲线
E.正常曲线
参考答案：A, C, E
Although the working mother is very busy, she still ____ a lot of time to children. [ ]
A. devotes
B. spends
C. leads
D. provides
耐磨强度M10越大，表明焦炭该项质量性能越好。
