题目内容

The first step for solid waste treatment is .

A. landfill
B. incineration
C. separation
D. composting

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Battery is hazardous solid waste.

A. 对
B. 错

papers are recyclable solid wastes

A. 对
B. 错

sand and leaves arenonrecyclable solid wastes

A. 对
B. 错

Municipal solid waste (MSW) are produced directly from homes.

A. 对
B. 错

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