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4. ____ I enjoy jogging. A. No matter summer or winter B. Whether summer or winter C. Both summer or winter D. Be it summer or winter

A......还是......

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9.I drop a 60-g golf ball from 2.0 m high. It rebounds to 1.5 m. How much energy is lost?

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D.0
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以下哪种属于沥青路面标准轴载（）

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