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Acceleration relates to motion.It () a change in motion.
Acceleration relates to motion.It () a change in motion.
A.calls
B.defines
C.means
D.refers
正确答案:means
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英文科技论文写作
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Unbalanced Force () to the sum total or net force exerted on an object.
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Assertiveness is () as a skill of being able to stand up for your own or other people's rights in a calm and positive way, without being either aggressive, or passively accepting 'wrong'.