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Mathematics: What is the water quality of the wastewater discharged from a middle school from an enterprise containing 10m 3/8 viruses and10/4 viruses? 1 m3 = 1 kg
10^ 14÷ 10^8× 10 = 10^7(m？ )
1 m3 = 1 kg
So m =107×103 =10/0 (kg)
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