与水俣病有关的物质是() ["镉","苯酚","铅","甲基汞","多氯联苯"]
日本水俣病产生的原因是() ["慢性铅中毒","慢性镉中毒","慢性汞中毒","慢性甲基汞中毒","慢性四乙铅中毒"]
1968年发生在日本的“米糠油事件”,受害者中毒的原因是米糠油中含有() ["酚","甲基汞","多环芳烃","多氯联苯","镉"]
水体污染物吸附于悬浮物和颗粒物后,逐渐下沉进入水体底质,在微生物的作用下可转变成毒性更大的理化性质完全不同的新的化学物质,这种情况最常见于水体() ["镉污染","有机氯农药污染","有机磷污染","酚污染","汞污染"]
酸雨的主要前体物质是() ["CO2","CO","O3","SO2","PAH"]
何谓人工呼吸机的使用法?它的目的是什么?