Difference between revisions of "怎样考取低压电工证理论篇"

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怎样考取低压电工证理论篇 (view source)

Revision as of 10:40, 19 August 2024

34 bytes added ,  19 August
→‎辨异
: 磁电式 仪表由固定的<u>永久磁铁</u>,可转动的<u>线圈</u>及转轴、游丝、指针、机械调零机构等组成.
 
; 10Ω
: 非高电阻率地区，避雷针接地电阻不大于 10&Omega;10Ω
: I 类工具绝缘电阻不超过 2Ω
 
; 电流频率
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