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【单选题】
将半径为R的球体加热,如果球半径增加△R,则球体积的增量△V≈A.
4πR△R
B.
4π △R
C.
4π
D.
π
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皮皮学刷刷变学霸
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【简答题】朋友帮了他很多忙,他欠他们的情
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A.
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B.
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A.
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B.
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C.
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D.
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A.
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B.
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C.
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D.
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【简答题】翻译: 朋友帮了他很多忙,他欠他们的情。(have a debt)
【简答题】朋友帮了他很多忙,他欠他们情。(have a debt)
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