As cotton is liable to absorb moisture, the insulation(绝缘性) will be adversely(不利地) affected.
由于棉花容易吸收水分,其绝缘性能会受到不利影响。
举一反三
- In the recent global recession, Richard’s business A: is not affected. B: is affected greatly. C: is affected to a certain degree.
- 4-2。which is the best material for heat insulation？（ ） A: water B: cotton C: vacuum
- Her health was _______ affected by the bad air. （ ） A: diversely B: adversely C: proactively D: relatively
- What<br/>can not affect the insulation resistance?____. A: moisture B: dirt C: electricity D: oil<br/>deposits
- 原文:Such materials are characterized by good insulation and high resistance to wear. 译文:这些材料的特点是:绝缘性好。
内容
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使用绝缘万用表测量绝缘电阻时需按住( )按钮才可读取绝缘阻值。 ( ) A: HOLD B: Hz C: INSULATION TEST D: RANGE
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The advantages of cotton include: A: high level of moisture absorption B: moderate strength ,good abrasion resistance •and good dimensional stability C: resists sunlight and heat well D: soft hand feel
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电动机绕组浸漆烘干的目的有（） A: 提高电动机绝缘的耐潮性和化学稳定性。 B: 改善电动机绝缘电气性能。 C: 提高电动机绝缘的导热性和绝缘性。 D: 机械强度得到提高
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insulation
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在长期运行过程中，电缆的绝缘性能在电场的作用下，随着时间的推移而发生下降，这种现象属于（）。 A: 绝缘受潮； B: 绝缘老化； C: 绝缘过热； D: 绝缘腐蚀。