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已知水在 293 K 时的表面张力 g = 0.07275 N · m -1 , 摩尔质量 M = 0.018 kg · mol -1 , 密度 r = 10 3 kg · m -3 。 273 K 时水的饱和蒸气压为 610.5 Pa ,在 273 – 293 K 温度区间内水的摩尔气化热 D Vap H m = 40.67 kJ · mol -1 ,求 293 K 水滴半径 R ′ = 10 -9 m 时,水的饱和蒸气压。
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【单选题】This country, as Lincoln said, belongs to the people. So do the natural resources which make it rich. They supply the basis of our prosperity now and hereafter. In preserving them, which is a national...
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A.
Its money.
B.
Its trade.
C.
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D.
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