测得一单摆摆动100次的时间是t=120.0+-0.2测得一单摆摆动100次的时间是t=120.0±0.2(s),则其摆动一次的时间是( )A.1.20±0.2(s)B.1.20±0.02(s)C.1.200±0.002(s)D.1.200±0.2(s)请附上解释..谢谢
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![测得一单摆摆动100次的时间是t=120.0+-0.2测得一单摆摆动100次的时间是t=120.0±0.2(s),则其摆动一次的时间是( )A.1.20±0.2(s)B.1.20±0.02(s)C.1.200±0.002(s)D.1.200±0.2(s)请附上解释..谢谢](/uploads/image/z/5461771-67-1.jpg?t=%E6%B5%8B%E5%BE%97%E4%B8%80%E5%8D%95%E6%91%86%E6%91%86%E5%8A%A8100%E6%AC%A1%E7%9A%84%E6%97%B6%E9%97%B4%E6%98%AFt%3D120.0%2B-0.2%E6%B5%8B%E5%BE%97%E4%B8%80%E5%8D%95%E6%91%86%E6%91%86%E5%8A%A8100%E6%AC%A1%E7%9A%84%E6%97%B6%E9%97%B4%E6%98%AFt%3D120.0%C2%B10.2%28s%29%2C%E5%88%99%E5%85%B6%E6%91%86%E5%8A%A8%E4%B8%80%E6%AC%A1%E7%9A%84%E6%97%B6%E9%97%B4%E6%98%AF%28++%29A.1.20%C2%B10.2%28s%29B.1.20%C2%B10.02%28s%29C.1.200%C2%B10.002%28s%29D.1.200%C2%B10.2%28s%29%E8%AF%B7%E9%99%84%E4%B8%8A%E8%A7%A3%E9%87%8A..%E8%B0%A2%E8%B0%A2)
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