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上海某溶剂厂于１９９８年１０月１８日试生产乙腈，２０日下午１∶３０清理中和池内乙腈残渣。清理工吴某（男，４８岁）身着普通工作服，脚穿雨靴，手戴橡胶手套，佩戴普通纱布口罩即下池底清理，共持续１ｈ，完工后仅洗手换下工作服。０．５ｈ后即感头晕、腹部不适、恶心、
Shanghai, a solvent plant on October 18, 1998 trial production of acetonitrile, at 1:30 pm on the 20th to clean up and pool acetonitrile residue. Cleaner Wu (male, 48 years old) dressed in ordinary work clothes, wearing rain boots, hands wearing rubber gloves, wearing ordinary gauze masks that the bottom of the pool clean, a total of 1h, after the completion of only wash their hands to change overalls. 0.5h feel dizzy, abdominal discomfort, nausea,