To control dust at mine sites, mining companies often useA、chemicals which may b

游客2024-01-08 49

问题 To control dust at mine sites, mining companies often use

选项 A、chemicals which may be toxic.
B、topsoil taken from the site before mining.
C、fresh water from nearby dams.
D、runoff water containing sediments.

答案 D // runoff water containing sediments

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