【单选题】作用在同一物体上的两个力 ,若其大小相等、方向相反,则它们( )
D.
可能是一对作用力与反作用力 prefix="o" ns="urn:schemas-microsoft-com:office:office"? ?xml:namespace>
【单选题】两个力大小相等、方向相反、作用在同一物体的一条直线上,这是( )。
【单选题】作用在同一物体上的两个力大小相等、方向相反,则此二力可能是
【单选题】What is tree of robotic drivers?
A.
It will take some time before robotic drivers can be put to practical use.
B.
Robotic drivers are not allowed to drive on busy roads.
C.
Robotic drivers can never replace human drivers.
D.
Robotic drivers are too expensive to use.
【单选题】What is true of robotic drivers?
A.
It will take some time before robotic drivers can be put to practical use.
B.
Robotic drivers are not allowed to drive on busy roads.
C.
Robotic drivers can never replace human drivers.
D.
Robotic drivers are too expensive to use.
【单选题】We can infer that the author's attitude towards the robotic companion is ______.
【单选题】关于检验结果的报告内容,下列哪项不是必备的
【简答题】力偶是作用在同一物体上大小相等、方向相反, 平行的一对平行力