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The heavy safety accident and fire accident to be stopped, the normal safety accident frequency rate is less than 1‰.
杜绝重大安全事故和火灾事故的发生,一般安全事故频率<1‰。
youdao
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The heavy safety accident and fire accident to be stopped, the normal safety accident frequency rate is less than 1‰.
杜绝重大安全事故和火灾事故的发生,一般安全事故频率<1‰。
youdao