Please listen to a clip from Chapter 2 “Roast Mutton” of The Hobbit , and decide whether the following statements are true or false. 1. Bilbo is indeed happy and relieved when he realizes that the dwarves have left without him.
【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...