单项选择题
After breakfast, I sent the children to school.
判断题 After breakfast, I sent the children to school.
确定直线的方向,通常用该直线的()来表示。 A. 水平角 ...
多项选择题确定直线的方向,通常用该直线的()来表示。 A. 水平角 B. 方位角 C. 垂直角 D. 象限角 E. 倾斜角
The counterfeit bills were a good facsimile of the real...
单项选择题The counterfeit bills were a good facsimile of the real ones.