【单选题】按照本课程的符号定义习惯(国际坐标系),绕x轴向右滚转为 ,绕z轴向左偏航为 。According to the sign convention in this course (international coordinate system), roll to the right about the x-axis is , and yaw to the left about...
【单选题】Speaker A:I broke my ankle last Tuesday. And now I have to be on crutches for six weeks. Speaker B:______. If there is anything you need,dont hesitate to let me know.