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方法有幾種 0.2昇=0.0002m^3(立方米) 則,0.2昇水銀的質量為:m=ρV=13.6×10^3kg/m^3×0.0002m^3=2.72kg 則,需要的瓶子數目為:n=10kg/2.72kg=3.676≈4個 注意,一定要取4個,
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