单选题
发布日期:2021-03-22
prevent the windings from becoming brittle
prevent moisture from condensing in the windings during shutdown
prevent acidic pitting of the slip rings
keep the lube oil warm for quick starting
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用平衡条件能求出全部内力的结构是静定结构。
依据《中华人民共和国固体废物污染环境防治法》,对暂时不利用或者不能利用的工业固体废物,企业事业单位必须按照国务院环境保护行政主管部门的规定()。
信访人对公安消防部门处理意见不服的,可以自收到书面答复之日起()日内,持书面答复向当地公安机关或其上一级公安消防部门提出复查请求。
面神经颞支损伤,临床上可出现的症状是( )。
我国《对外贸易法》的基本原则是()。
胆红素脑病又称为(),一般发生在生后2~7天,()尤易发生。
投标保证金的数额最高不得超过()。
什么是零售?如何理解这一定义?
阶层最基本的含义是什么()
请领票据时,以上趟票据用量为基准,当结存数量不足()趟乘务时,才能按规定办理请领票据手续。
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