【判断题】【消耗次数：1】
物料提升机安装高度超过20m的物料提升机应安装渐进式防坠安全器及自动停层、语音影像信号监控装置。
①
正确
②
错误
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that are
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as are
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which is
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comfortably
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fare ?
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charge ?
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money ?
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pay?
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agreed
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returned
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objected
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wait
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time
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patience
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secret
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scientific
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serious
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