题目详情
单选题 The removal of impurities from wastewater before it reaches natural bodies of water such as rivers, lakes, and oceans.( )
A. 1 zero emission
B. 2 wastewater treatment
C. 3 waste recycling
D. 4 green production

学科:化工英语(新时代职业英语)
时间:2023-11-18 00:56:25
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