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从几起事故谈必须坚持企业安全生产主体责任
学习有效期 长期有效
{
"i18nChapterName": "章",
"i18nUnitName": "节",
"i18nLessonName": "课时",
"i18nTaskName":"任务"
}
{
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}
,
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"live": {
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"name": "直播"
}
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"discuss": {
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"exercise": {
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"download": {
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"upload": {
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"name": "文件上传"
}
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"share": {
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"name": "分享视频"
}
}
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