图3-5画出了速度的相加，常识告诉我们这种相加方法必定是正确的。Fig. 3-5 showed an addition of velocities that our common sense tell

图3-5画出了速度的相加，常识告诉我们这种相加方法必定是正确的。Fig. 3-5 showed an addition of velocities that our common sense tells us must be right.

A.正确

B.错误

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