【单选题】Why did the student miss the lesson?
【单选题】对扎止血带的伤员,应该每隔多久松开止血带,松开时间为多少
【单选题】Which lesson did you learn yesterday? ________.
【单选题】Who were the most satisfied with their jobs according to the passage?
A.
People making more than $15,000 per year.
B.
People making $15,000 per year.
C.
People making more than $50,000 per year.
D.
People making $50,000 per year.
【单选题】Which lesson did you learn yesterday? ________.
【简答题】Among the members of the small band of Jamestown settlers was ____, an English soldier of fortune, whose reports of exploration, published in the early 1600s, have been described as the first distinct...
【多选题】无头模式分为航向锁定和返航点锁定,关于他们的描述正确的是 ?
A.
航向锁定模式:它必须在GPS模式下才有效,无论多旋翼在哪个方位,前方的指向就是起飞点到多旋翼的方向。后方就多旋翼到起飞点的方向。
B.
航向锁定模式:必须在姿态模式或GPS模式下才有效。多旋翼在起飞前解锁的时候,会记录以起飞点为中心的前后左右的朝向,在起飞后,无论机头朝向哪里,遥控器给出的向前后左右飞行的指令,都会按照多旋翼所记录的以起飞点为中心的前后左右朝向进行飞行。
C.
返航点模式:必须在GPS模式下才有效,无论多旋翼在哪个方位,前方的指向就是起飞点到多旋翼的方向。后方就多旋翼到起飞点的方向。
D.
返航点模式:必须在姿态模式或GPS模式下才有效。多旋翼在起飞前解锁的时候,会记录以起飞点为中心的前后左右的朝向,在起飞后,无论机头朝向哪里,遥控器给出的向前后左右飞行的指令,都会按照多旋翼所记录的以起飞点为中心的前后左右朝向进行飞行。