Traditional Culture Encyclopedia - Weather inquiry - The unit of length of a bridge.
The unit of length of a bridge.
① Huainan Weiping Huaihe River Bridge is the first long bridge in Huaihe River, with a length of about 3200m = 3.2km② The mass of five apples is about 1kg, so the mass of an apple is about 200g = 0.2kg③ Because 1 micron = 10? 6 m, then 2.5 micron =2.5 × 10? 6 m. So the answer is: km; kg； 2.5 × 10 ? 6 .
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