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【多选题】
“水污染”是指水体因某种物质的介入，而导致其( )等方面特性的改变，从而影响水的有效利用，危害人体健康或者破坏生态环境，造成水质恶化的现象。A.
化学
B.
物理
C.
生物
D.
放射性
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A.
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