单选题
发布日期:2020-04-10
tar -cvf file_system.tar /staticFS ; gzip file_system.tar
tar -xvf /staticFS file_system.tar ; gzip file_system.tar
tar -cvf /staticFS file_system.tar ; compress file_system.tar
tar -xvf file_system.tar /staticFS ; compress file_system.tar
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以下何脉不主宿食()。
电动机的绝缘等级,表示电动机绕组的绝缘材料和导线所能耐受温度极限的等级。如 E 级绝缘其允许最高温度为 120 摄氏度。
ZD6型电动转辙机的电动机在环境温度为20℃±5℃和空气相对湿度为95%±3%的恒温环境中进行耐潮试验,放置时间不少于24h,绝缘电阻不低于()
第三方物流
使用一辆60t、61t平车装载超长均重货物,两端均衡突出车端长度L大于等于3000mm小于3500mm时,容许载重量()t。
我国执法的主体是()。
过滤王用户上网日志是存放在哪个文件夹下的()
抽样调查必须遵循()
大理石是变质岩,为中性石材
处理投诉时要坚持()的态度,客观理性的看待客户投诉。
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