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【简答题】
半径已知的情况下,求解圆的面积和周长; 周长已知的情况下,求解圆的半径和面积; 面积已知的情况下,求解半径和周长。 (所需数据皆从键盘输入,使用round(x, 2)函数保留2位小数,并加入适当解释性字符串 ,PI = 3.1415)
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【单选题】It took 7 hours and 59 minutes to cover the 2,298 kilometers from Beijing to Guangzhou, cutting the journey time ______________ 14 hours.
A.
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【简答题】It took 7 hours and 59 minutes to cover the 2,298 kilometers from Beijing to Guangzhou, cutting the journey time ______________ 14 hours.
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A.
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B.
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C.
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