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 11:58, 19 August 2024

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→‎辨异
 
; 实质
：万用表实质是一个带有整流器的磁电式仪表.万用表由表头、测量电路及转换开关三个主要部分组成.滚轮卡棘轮
 
; Ω
: 行程开关 反力系统+触点系统
: 万能转换开关 触点系统
 
; 卡
:
 
== 理论 ==
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