Results The main occupational risk factors were dust and noise.

结果该厂主要职业危害因素是粉尘和噪声。

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Protection of persons at risk of occupational exposure 1.

保护面临职业性接触风险者1。

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Those at risk of occupational exposure should

面临职业性接触风险者应

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Those at risk of occupational exposure should

面临职业性接触风险者应

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