问题
多选题
下列说法正确的是( ) A.力的作用是相互的,一个物体是施力物体同时也是受力物体 B.物体的重心一定在物体上 C.不接触的两个物体之间不可能有力的作用 D.静摩擦力的方向一定与物体相对运动趋势方向相反 |
答案
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下列说法正确的是( ) A.力的作用是相互的,一个物体是施力物体同时也是受力物体 B.物体的重心一定在物体上 C.不接触的两个物体之间不可能有力的作用 D.静摩擦力的方向一定与物体相对运动趋势方向相反 |
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A: Hello, is that Wu Bin speaking? B: Yes. Who’s that? A: This is Tian Hong. Are you free this Saturday evening? B: (1) A: I’ve got two tickets to Jay Chou’s concert. (2) B: Certainly, I’d love to. He’s my favorite singer. It’s very nice of you. (3) A: Let’s meet at the gate of the park at four o’clock. B: (4) I want to buy him a gift. A: OK. I’ll get there at three. Shall we go to the shopping center to buy the gift? B: (5) See you then. A: See you.
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